Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1 | /* |
Ben Pfaff | ad55200 | 2014-05-06 16:48:38 -0700 | [diff] [blame] | 2 | * Copyright (c) 2007-2014 Nicira, Inc. |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of version 2 of the GNU General Public |
| 6 | * License as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | * General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program; if not, write to the Free Software |
| 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 16 | * 02110-1301, USA |
| 17 | */ |
| 18 | |
| 19 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 20 | |
| 21 | #include <linux/init.h> |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/if_arp.h> |
| 24 | #include <linux/if_vlan.h> |
| 25 | #include <linux/in.h> |
| 26 | #include <linux/ip.h> |
| 27 | #include <linux/jhash.h> |
| 28 | #include <linux/delay.h> |
| 29 | #include <linux/time.h> |
| 30 | #include <linux/etherdevice.h> |
| 31 | #include <linux/genetlink.h> |
| 32 | #include <linux/kernel.h> |
| 33 | #include <linux/kthread.h> |
| 34 | #include <linux/mutex.h> |
| 35 | #include <linux/percpu.h> |
| 36 | #include <linux/rcupdate.h> |
| 37 | #include <linux/tcp.h> |
| 38 | #include <linux/udp.h> |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 39 | #include <linux/ethtool.h> |
| 40 | #include <linux/wait.h> |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 41 | #include <asm/div64.h> |
| 42 | #include <linux/highmem.h> |
| 43 | #include <linux/netfilter_bridge.h> |
| 44 | #include <linux/netfilter_ipv4.h> |
| 45 | #include <linux/inetdevice.h> |
| 46 | #include <linux/list.h> |
| 47 | #include <linux/openvswitch.h> |
| 48 | #include <linux/rculist.h> |
| 49 | #include <linux/dmi.h> |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 50 | #include <net/genetlink.h> |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 51 | #include <net/net_namespace.h> |
| 52 | #include <net/netns/generic.h> |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 53 | |
| 54 | #include "datapath.h" |
| 55 | #include "flow.h" |
Andy Zhou | e80857c | 2014-01-21 09:31:04 -0800 | [diff] [blame] | 56 | #include "flow_table.h" |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 57 | #include "flow_netlink.h" |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 58 | #include "vport-internal_dev.h" |
Thomas Graf | cff63a5 | 2013-04-29 13:06:41 +0000 | [diff] [blame] | 59 | #include "vport-netdev.h" |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 60 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 61 | int ovs_net_id __read_mostly; |
Pravin B Shelar | 9ba559d | 2014-11-06 06:44:27 -0800 | [diff] [blame] | 62 | EXPORT_SYMBOL_GPL(ovs_net_id); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 63 | |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 64 | static struct genl_family dp_packet_genl_family; |
| 65 | static struct genl_family dp_flow_genl_family; |
| 66 | static struct genl_family dp_datapath_genl_family; |
| 67 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 68 | static const struct nla_policy flow_policy[]; |
| 69 | |
stephen hemminger | 48e48a7 | 2014-07-16 11:25:52 -0700 | [diff] [blame] | 70 | static const struct genl_multicast_group ovs_dp_flow_multicast_group = { |
| 71 | .name = OVS_FLOW_MCGROUP, |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 72 | }; |
| 73 | |
stephen hemminger | 48e48a7 | 2014-07-16 11:25:52 -0700 | [diff] [blame] | 74 | static const struct genl_multicast_group ovs_dp_datapath_multicast_group = { |
| 75 | .name = OVS_DATAPATH_MCGROUP, |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 76 | }; |
| 77 | |
stephen hemminger | 48e48a7 | 2014-07-16 11:25:52 -0700 | [diff] [blame] | 78 | static const struct genl_multicast_group ovs_dp_vport_multicast_group = { |
| 79 | .name = OVS_VPORT_MCGROUP, |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 80 | }; |
| 81 | |
Jarno Rajahalme | fb5d1e9 | 2014-05-05 13:13:14 -0700 | [diff] [blame] | 82 | /* Check if need to build a reply message. |
| 83 | * OVS userspace sets the NLM_F_ECHO flag if it needs the reply. */ |
Samuel Gauthier | 9b67aa4 | 2014-09-18 10:31:04 +0200 | [diff] [blame] | 84 | static bool ovs_must_notify(struct genl_family *family, struct genl_info *info, |
| 85 | unsigned int group) |
Jarno Rajahalme | fb5d1e9 | 2014-05-05 13:13:14 -0700 | [diff] [blame] | 86 | { |
| 87 | return info->nlhdr->nlmsg_flags & NLM_F_ECHO || |
Johannes Berg | f8403a2 | 2014-12-22 18:56:36 +0100 | [diff] [blame] | 88 | genl_has_listeners(family, genl_info_net(info), group); |
Jarno Rajahalme | fb5d1e9 | 2014-05-05 13:13:14 -0700 | [diff] [blame] | 89 | } |
| 90 | |
Johannes Berg | 68eb550 | 2013-11-19 15:19:38 +0100 | [diff] [blame] | 91 | static void ovs_notify(struct genl_family *family, |
Johannes Berg | 2a94fe4 | 2013-11-19 15:19:39 +0100 | [diff] [blame] | 92 | struct sk_buff *skb, struct genl_info *info) |
Thomas Graf | ed66118 | 2013-03-29 14:46:50 +0100 | [diff] [blame] | 93 | { |
Jiri Benc | 92c14d9 | 2015-09-22 18:56:43 +0200 | [diff] [blame] | 94 | genl_notify(family, skb, info, 0, GFP_KERNEL); |
Thomas Graf | ed66118 | 2013-03-29 14:46:50 +0100 | [diff] [blame] | 95 | } |
| 96 | |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 97 | /** |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 98 | * DOC: Locking: |
| 99 | * |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 100 | * All writes e.g. Writes to device state (add/remove datapath, port, set |
| 101 | * operations on vports, etc.), Writes to other state (flow table |
| 102 | * modifications, set miscellaneous datapath parameters, etc.) are protected |
| 103 | * by ovs_lock. |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 104 | * |
| 105 | * Reads are protected by RCU. |
| 106 | * |
| 107 | * There are a few special cases (mostly stats) that have their own |
| 108 | * synchronization but they nest under all of above and don't interact with |
| 109 | * each other. |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 110 | * |
| 111 | * The RTNL lock nests inside ovs_mutex. |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 112 | */ |
| 113 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 114 | static DEFINE_MUTEX(ovs_mutex); |
| 115 | |
| 116 | void ovs_lock(void) |
| 117 | { |
| 118 | mutex_lock(&ovs_mutex); |
| 119 | } |
| 120 | |
| 121 | void ovs_unlock(void) |
| 122 | { |
| 123 | mutex_unlock(&ovs_mutex); |
| 124 | } |
| 125 | |
| 126 | #ifdef CONFIG_LOCKDEP |
| 127 | int lockdep_ovsl_is_held(void) |
| 128 | { |
| 129 | if (debug_locks) |
| 130 | return lockdep_is_held(&ovs_mutex); |
| 131 | else |
| 132 | return 1; |
| 133 | } |
Pravin B Shelar | 9ba559d | 2014-11-06 06:44:27 -0800 | [diff] [blame] | 134 | EXPORT_SYMBOL_GPL(lockdep_ovsl_is_held); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 135 | #endif |
| 136 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 137 | static struct vport *new_vport(const struct vport_parms *); |
Thomas Graf | 8055a89 | 2013-12-13 15:22:20 +0100 | [diff] [blame] | 138 | static int queue_gso_packets(struct datapath *dp, struct sk_buff *, |
Pravin B Shelar | e8eedb8 | 2014-11-06 06:57:27 -0800 | [diff] [blame] | 139 | const struct sw_flow_key *, |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 140 | const struct dp_upcall_info *, |
| 141 | uint32_t cutlen); |
Thomas Graf | 8055a89 | 2013-12-13 15:22:20 +0100 | [diff] [blame] | 142 | static int queue_userspace_packet(struct datapath *dp, struct sk_buff *, |
Pravin B Shelar | e8eedb8 | 2014-11-06 06:57:27 -0800 | [diff] [blame] | 143 | const struct sw_flow_key *, |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 144 | const struct dp_upcall_info *, |
| 145 | uint32_t cutlen); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 146 | |
Andy Zhou | cc3a5ae | 2014-09-08 13:14:22 -0700 | [diff] [blame] | 147 | /* Must be called with rcu_read_lock. */ |
| 148 | static struct datapath *get_dp_rcu(struct net *net, int dp_ifindex) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 149 | { |
Andy Zhou | cc3a5ae | 2014-09-08 13:14:22 -0700 | [diff] [blame] | 150 | struct net_device *dev = dev_get_by_index_rcu(net, dp_ifindex); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 151 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 152 | if (dev) { |
| 153 | struct vport *vport = ovs_internal_dev_get_vport(dev); |
| 154 | if (vport) |
Andy Zhou | cc3a5ae | 2014-09-08 13:14:22 -0700 | [diff] [blame] | 155 | return vport->dp; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 156 | } |
Andy Zhou | cc3a5ae | 2014-09-08 13:14:22 -0700 | [diff] [blame] | 157 | |
| 158 | return NULL; |
| 159 | } |
| 160 | |
| 161 | /* The caller must hold either ovs_mutex or rcu_read_lock to keep the |
| 162 | * returned dp pointer valid. |
| 163 | */ |
| 164 | static inline struct datapath *get_dp(struct net *net, int dp_ifindex) |
| 165 | { |
| 166 | struct datapath *dp; |
| 167 | |
| 168 | WARN_ON_ONCE(!rcu_read_lock_held() && !lockdep_ovsl_is_held()); |
| 169 | rcu_read_lock(); |
| 170 | dp = get_dp_rcu(net, dp_ifindex); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 171 | rcu_read_unlock(); |
| 172 | |
| 173 | return dp; |
| 174 | } |
| 175 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 176 | /* Must be called with rcu_read_lock or ovs_mutex. */ |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 177 | const char *ovs_dp_name(const struct datapath *dp) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 178 | { |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 179 | struct vport *vport = ovs_vport_ovsl_rcu(dp, OVSP_LOCAL); |
Thomas Graf | c9db965 | 2015-07-21 10:44:05 +0200 | [diff] [blame] | 180 | return ovs_vport_name(vport); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 181 | } |
| 182 | |
Thomas Graf | 12eb18f | 2014-11-06 06:58:52 -0800 | [diff] [blame] | 183 | static int get_dpifindex(const struct datapath *dp) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 184 | { |
| 185 | struct vport *local; |
| 186 | int ifindex; |
| 187 | |
| 188 | rcu_read_lock(); |
| 189 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 190 | local = ovs_vport_rcu(dp, OVSP_LOCAL); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 191 | if (local) |
Thomas Graf | be4ace6 | 2015-07-21 10:44:04 +0200 | [diff] [blame] | 192 | ifindex = local->dev->ifindex; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 193 | else |
| 194 | ifindex = 0; |
| 195 | |
| 196 | rcu_read_unlock(); |
| 197 | |
| 198 | return ifindex; |
| 199 | } |
| 200 | |
| 201 | static void destroy_dp_rcu(struct rcu_head *rcu) |
| 202 | { |
| 203 | struct datapath *dp = container_of(rcu, struct datapath, rcu); |
| 204 | |
Pravin B Shelar | 9b996e5 | 2014-05-06 18:41:20 -0700 | [diff] [blame] | 205 | ovs_flow_tbl_destroy(&dp->table); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 206 | free_percpu(dp->stats_percpu); |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 207 | kfree(dp->ports); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 208 | kfree(dp); |
| 209 | } |
| 210 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 211 | static struct hlist_head *vport_hash_bucket(const struct datapath *dp, |
| 212 | u16 port_no) |
| 213 | { |
| 214 | return &dp->ports[port_no & (DP_VPORT_HASH_BUCKETS - 1)]; |
| 215 | } |
| 216 | |
Jarno Rajahalme | bb6f9a7 | 2014-05-05 11:32:17 -0700 | [diff] [blame] | 217 | /* Called with ovs_mutex or RCU read lock. */ |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 218 | struct vport *ovs_lookup_vport(const struct datapath *dp, u16 port_no) |
| 219 | { |
| 220 | struct vport *vport; |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 221 | struct hlist_head *head; |
| 222 | |
| 223 | head = vport_hash_bucket(dp, port_no); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 224 | hlist_for_each_entry_rcu(vport, head, dp_hash_node) { |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 225 | if (vport->port_no == port_no) |
| 226 | return vport; |
| 227 | } |
| 228 | return NULL; |
| 229 | } |
| 230 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 231 | /* Called with ovs_mutex. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 232 | static struct vport *new_vport(const struct vport_parms *parms) |
| 233 | { |
| 234 | struct vport *vport; |
| 235 | |
| 236 | vport = ovs_vport_add(parms); |
| 237 | if (!IS_ERR(vport)) { |
| 238 | struct datapath *dp = parms->dp; |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 239 | struct hlist_head *head = vport_hash_bucket(dp, vport->port_no); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 240 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 241 | hlist_add_head_rcu(&vport->dp_hash_node, head); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 242 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 243 | return vport; |
| 244 | } |
| 245 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 246 | void ovs_dp_detach_port(struct vport *p) |
| 247 | { |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 248 | ASSERT_OVSL(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 249 | |
| 250 | /* First drop references to device. */ |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 251 | hlist_del_rcu(&p->dp_hash_node); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 252 | |
| 253 | /* Then destroy it. */ |
| 254 | ovs_vport_del(p); |
| 255 | } |
| 256 | |
| 257 | /* Must be called with rcu_read_lock. */ |
Pravin B Shelar | 8c8b1b8 | 2014-09-15 19:28:44 -0700 | [diff] [blame] | 258 | void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 259 | { |
Pravin B Shelar | 83c8df2 | 2014-09-15 19:20:31 -0700 | [diff] [blame] | 260 | const struct vport *p = OVS_CB(skb)->input_vport; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 261 | struct datapath *dp = p->dp; |
| 262 | struct sw_flow *flow; |
Lorand Jakab | d98612b | 2014-10-06 05:45:32 -0700 | [diff] [blame] | 263 | struct sw_flow_actions *sf_acts; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 264 | struct dp_stats_percpu *stats; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 265 | u64 *stats_counter; |
Andy Zhou | 1bd7116 | 2013-10-22 10:42:46 -0700 | [diff] [blame] | 266 | u32 n_mask_hit; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 267 | |
Shan Wei | 404f2f1 | 2012-11-13 09:52:25 +0800 | [diff] [blame] | 268 | stats = this_cpu_ptr(dp->stats_percpu); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 269 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 270 | /* Look up flow. */ |
Pravin B Shelar | 8c8b1b8 | 2014-09-15 19:28:44 -0700 | [diff] [blame] | 271 | flow = ovs_flow_tbl_lookup_stats(&dp->table, key, &n_mask_hit); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 272 | if (unlikely(!flow)) { |
| 273 | struct dp_upcall_info upcall; |
Pravin B Shelar | 8c8b1b8 | 2014-09-15 19:28:44 -0700 | [diff] [blame] | 274 | int error; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 275 | |
Neil McKee | ccea744 | 2015-05-26 20:59:43 -0700 | [diff] [blame] | 276 | memset(&upcall, 0, sizeof(upcall)); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 277 | upcall.cmd = OVS_PACKET_CMD_MISS; |
Alex Wang | 5cd667b | 2014-07-17 15:14:13 -0700 | [diff] [blame] | 278 | upcall.portid = ovs_vport_find_upcall_portid(p, skb); |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 279 | upcall.mru = OVS_CB(skb)->mru; |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 280 | error = ovs_dp_upcall(dp, skb, key, &upcall, 0); |
Li RongQing | c5eba0b | 2014-09-03 17:43:45 +0800 | [diff] [blame] | 281 | if (unlikely(error)) |
| 282 | kfree_skb(skb); |
| 283 | else |
| 284 | consume_skb(skb); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 285 | stats_counter = &stats->n_missed; |
| 286 | goto out; |
| 287 | } |
| 288 | |
Lorand Jakab | d98612b | 2014-10-06 05:45:32 -0700 | [diff] [blame] | 289 | ovs_flow_stats_update(flow, key->tp.flags, skb); |
| 290 | sf_acts = rcu_dereference(flow->sf_acts); |
| 291 | ovs_execute_actions(dp, skb, sf_acts, key); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 292 | |
Pravin B Shelar | e298e50 | 2013-10-29 17:22:21 -0700 | [diff] [blame] | 293 | stats_counter = &stats->n_hit; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 294 | |
| 295 | out: |
| 296 | /* Update datapath statistics. */ |
WANG Cong | df9d9fd | 2014-02-14 15:10:46 -0800 | [diff] [blame] | 297 | u64_stats_update_begin(&stats->syncp); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 298 | (*stats_counter)++; |
Andy Zhou | 1bd7116 | 2013-10-22 10:42:46 -0700 | [diff] [blame] | 299 | stats->n_mask_hit += n_mask_hit; |
WANG Cong | df9d9fd | 2014-02-14 15:10:46 -0800 | [diff] [blame] | 300 | u64_stats_update_end(&stats->syncp); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 301 | } |
| 302 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 303 | int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb, |
Pravin B Shelar | e8eedb8 | 2014-11-06 06:57:27 -0800 | [diff] [blame] | 304 | const struct sw_flow_key *key, |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 305 | const struct dp_upcall_info *upcall_info, |
| 306 | uint32_t cutlen) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 307 | { |
| 308 | struct dp_stats_percpu *stats; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 309 | int err; |
| 310 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 311 | if (upcall_info->portid == 0) { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 312 | err = -ENOTCONN; |
| 313 | goto err; |
| 314 | } |
| 315 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 316 | if (!skb_is_gso(skb)) |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 317 | err = queue_userspace_packet(dp, skb, key, upcall_info, cutlen); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 318 | else |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 319 | err = queue_gso_packets(dp, skb, key, upcall_info, cutlen); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 320 | if (err) |
| 321 | goto err; |
| 322 | |
| 323 | return 0; |
| 324 | |
| 325 | err: |
Shan Wei | 404f2f1 | 2012-11-13 09:52:25 +0800 | [diff] [blame] | 326 | stats = this_cpu_ptr(dp->stats_percpu); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 327 | |
WANG Cong | df9d9fd | 2014-02-14 15:10:46 -0800 | [diff] [blame] | 328 | u64_stats_update_begin(&stats->syncp); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 329 | stats->n_lost++; |
WANG Cong | df9d9fd | 2014-02-14 15:10:46 -0800 | [diff] [blame] | 330 | u64_stats_update_end(&stats->syncp); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 331 | |
| 332 | return err; |
| 333 | } |
| 334 | |
Thomas Graf | 8055a89 | 2013-12-13 15:22:20 +0100 | [diff] [blame] | 335 | static int queue_gso_packets(struct datapath *dp, struct sk_buff *skb, |
Pravin B Shelar | e8eedb8 | 2014-11-06 06:57:27 -0800 | [diff] [blame] | 336 | const struct sw_flow_key *key, |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 337 | const struct dp_upcall_info *upcall_info, |
| 338 | uint32_t cutlen) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 339 | { |
Ben Pfaff | a1b5d0d | 2012-07-20 14:47:54 -0700 | [diff] [blame] | 340 | unsigned short gso_type = skb_shinfo(skb)->gso_type; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 341 | struct sw_flow_key later_key; |
| 342 | struct sk_buff *segs, *nskb; |
| 343 | int err; |
| 344 | |
Konstantin Khlebnikov | 9207f9d | 2016-01-08 15:21:46 +0300 | [diff] [blame] | 345 | BUILD_BUG_ON(sizeof(*OVS_CB(skb)) > SKB_SGO_CB_OFFSET); |
Thomas Graf | 09c5e60 | 2013-12-13 15:22:22 +0100 | [diff] [blame] | 346 | segs = __skb_gso_segment(skb, NETIF_F_SG, false); |
Pravin B Shelar | 92e5dfc | 2012-07-20 14:46:29 -0700 | [diff] [blame] | 347 | if (IS_ERR(segs)) |
| 348 | return PTR_ERR(segs); |
Florian Westphal | 330966e | 2014-10-20 13:49:17 +0200 | [diff] [blame] | 349 | if (segs == NULL) |
| 350 | return -EINVAL; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 351 | |
Pravin B Shelar | e8eedb8 | 2014-11-06 06:57:27 -0800 | [diff] [blame] | 352 | if (gso_type & SKB_GSO_UDP) { |
| 353 | /* The initial flow key extracted by ovs_flow_key_extract() |
| 354 | * in this case is for a first fragment, so we need to |
| 355 | * properly mark later fragments. |
| 356 | */ |
| 357 | later_key = *key; |
| 358 | later_key.ip.frag = OVS_FRAG_TYPE_LATER; |
| 359 | } |
| 360 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 361 | /* Queue all of the segments. */ |
| 362 | skb = segs; |
| 363 | do { |
Pravin B Shelar | e8eedb8 | 2014-11-06 06:57:27 -0800 | [diff] [blame] | 364 | if (gso_type & SKB_GSO_UDP && skb != segs) |
| 365 | key = &later_key; |
| 366 | |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 367 | err = queue_userspace_packet(dp, skb, key, upcall_info, cutlen); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 368 | if (err) |
| 369 | break; |
| 370 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 371 | } while ((skb = skb->next)); |
| 372 | |
| 373 | /* Free all of the segments. */ |
| 374 | skb = segs; |
| 375 | do { |
| 376 | nskb = skb->next; |
| 377 | if (err) |
| 378 | kfree_skb(skb); |
| 379 | else |
| 380 | consume_skb(skb); |
| 381 | } while ((skb = nskb)); |
| 382 | return err; |
| 383 | } |
| 384 | |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 385 | static size_t upcall_msg_size(const struct dp_upcall_info *upcall_info, |
Liping Zhang | 3c7af81 | 2017-08-16 13:30:07 +0800 | [diff] [blame] | 386 | unsigned int hdrlen, int actions_attrlen) |
Thomas Graf | c3ff8cf | 2013-03-29 14:46:49 +0100 | [diff] [blame] | 387 | { |
| 388 | size_t size = NLMSG_ALIGN(sizeof(struct ovs_header)) |
Thomas Graf | bda56f1 | 2013-12-13 15:22:21 +0100 | [diff] [blame] | 389 | + nla_total_size(hdrlen) /* OVS_PACKET_ATTR_PACKET */ |
William Tu | b95e592 | 2016-06-20 07:26:17 -0700 | [diff] [blame] | 390 | + nla_total_size(ovs_key_attr_size()) /* OVS_PACKET_ATTR_KEY */ |
| 391 | + nla_total_size(sizeof(unsigned int)); /* OVS_PACKET_ATTR_LEN */ |
Thomas Graf | c3ff8cf | 2013-03-29 14:46:49 +0100 | [diff] [blame] | 392 | |
| 393 | /* OVS_PACKET_ATTR_USERDATA */ |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 394 | if (upcall_info->userdata) |
| 395 | size += NLA_ALIGN(upcall_info->userdata->nla_len); |
| 396 | |
| 397 | /* OVS_PACKET_ATTR_EGRESS_TUN_KEY */ |
| 398 | if (upcall_info->egress_tun_info) |
| 399 | size += nla_total_size(ovs_tun_key_attr_size()); |
Thomas Graf | c3ff8cf | 2013-03-29 14:46:49 +0100 | [diff] [blame] | 400 | |
Neil McKee | ccea744 | 2015-05-26 20:59:43 -0700 | [diff] [blame] | 401 | /* OVS_PACKET_ATTR_ACTIONS */ |
| 402 | if (upcall_info->actions_len) |
Liping Zhang | 3c7af81 | 2017-08-16 13:30:07 +0800 | [diff] [blame] | 403 | size += nla_total_size(actions_attrlen); |
Neil McKee | ccea744 | 2015-05-26 20:59:43 -0700 | [diff] [blame] | 404 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 405 | /* OVS_PACKET_ATTR_MRU */ |
| 406 | if (upcall_info->mru) |
| 407 | size += nla_total_size(sizeof(upcall_info->mru)); |
| 408 | |
Thomas Graf | c3ff8cf | 2013-03-29 14:46:49 +0100 | [diff] [blame] | 409 | return size; |
| 410 | } |
| 411 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 412 | static void pad_packet(struct datapath *dp, struct sk_buff *skb) |
| 413 | { |
| 414 | if (!(dp->user_features & OVS_DP_F_UNALIGNED)) { |
| 415 | size_t plen = NLA_ALIGN(skb->len) - skb->len; |
| 416 | |
| 417 | if (plen > 0) |
| 418 | memset(skb_put(skb, plen), 0, plen); |
| 419 | } |
| 420 | } |
| 421 | |
Thomas Graf | 8055a89 | 2013-12-13 15:22:20 +0100 | [diff] [blame] | 422 | static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb, |
Pravin B Shelar | e8eedb8 | 2014-11-06 06:57:27 -0800 | [diff] [blame] | 423 | const struct sw_flow_key *key, |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 424 | const struct dp_upcall_info *upcall_info, |
| 425 | uint32_t cutlen) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 426 | { |
| 427 | struct ovs_header *upcall; |
| 428 | struct sk_buff *nskb = NULL; |
Li RongQing | 4ee45ea | 2014-09-02 20:52:28 +0800 | [diff] [blame] | 429 | struct sk_buff *user_skb = NULL; /* to be queued to userspace */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 430 | struct nlattr *nla; |
Thomas Graf | 795449d | 2013-11-30 13:21:32 +0100 | [diff] [blame] | 431 | size_t len; |
Thomas Graf | bda56f1 | 2013-12-13 15:22:21 +0100 | [diff] [blame] | 432 | unsigned int hlen; |
Thomas Graf | 8055a89 | 2013-12-13 15:22:20 +0100 | [diff] [blame] | 433 | int err, dp_ifindex; |
| 434 | |
| 435 | dp_ifindex = get_dpifindex(dp); |
| 436 | if (!dp_ifindex) |
| 437 | return -ENODEV; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 438 | |
Jiri Pirko | df8a39d | 2015-01-13 17:13:44 +0100 | [diff] [blame] | 439 | if (skb_vlan_tag_present(skb)) { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 440 | nskb = skb_clone(skb, GFP_ATOMIC); |
| 441 | if (!nskb) |
| 442 | return -ENOMEM; |
| 443 | |
Jiri Pirko | 5968250 | 2014-11-19 14:04:59 +0100 | [diff] [blame] | 444 | nskb = __vlan_hwaccel_push_inside(nskb); |
Dan Carpenter | 8aa51d6 | 2012-05-13 08:44:18 +0000 | [diff] [blame] | 445 | if (!nskb) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 446 | return -ENOMEM; |
| 447 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 448 | skb = nskb; |
| 449 | } |
| 450 | |
| 451 | if (nla_attr_size(skb->len) > USHRT_MAX) { |
| 452 | err = -EFBIG; |
| 453 | goto out; |
| 454 | } |
| 455 | |
Thomas Graf | bda56f1 | 2013-12-13 15:22:21 +0100 | [diff] [blame] | 456 | /* Complete checksum if needed */ |
| 457 | if (skb->ip_summed == CHECKSUM_PARTIAL && |
| 458 | (err = skb_checksum_help(skb))) |
| 459 | goto out; |
| 460 | |
| 461 | /* Older versions of OVS user space enforce alignment of the last |
| 462 | * Netlink attribute to NLA_ALIGNTO which would require extensive |
| 463 | * padding logic. Only perform zerocopy if padding is not required. |
| 464 | */ |
| 465 | if (dp->user_features & OVS_DP_F_UNALIGNED) |
| 466 | hlen = skb_zerocopy_headlen(skb); |
| 467 | else |
| 468 | hlen = skb->len; |
| 469 | |
Liping Zhang | 3c7af81 | 2017-08-16 13:30:07 +0800 | [diff] [blame] | 470 | len = upcall_msg_size(upcall_info, hlen - cutlen, |
| 471 | OVS_CB(skb)->acts_origlen); |
Florian Westphal | 551ddc0 | 2016-02-18 15:03:25 +0100 | [diff] [blame] | 472 | user_skb = genlmsg_new(len, GFP_ATOMIC); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 473 | if (!user_skb) { |
| 474 | err = -ENOMEM; |
| 475 | goto out; |
| 476 | } |
| 477 | |
| 478 | upcall = genlmsg_put(user_skb, 0, 0, &dp_packet_genl_family, |
| 479 | 0, upcall_info->cmd); |
| 480 | upcall->dp_ifindex = dp_ifindex; |
| 481 | |
Joe Stringer | 5b4237b | 2015-01-21 16:42:48 -0800 | [diff] [blame] | 482 | err = ovs_nla_put_key(key, key, OVS_PACKET_ATTR_KEY, false, user_skb); |
Andy Zhou | f53e383 | 2014-07-17 15:17:44 -0700 | [diff] [blame] | 483 | BUG_ON(err); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 484 | |
| 485 | if (upcall_info->userdata) |
Ben Pfaff | 4490108 | 2013-02-15 17:29:22 -0800 | [diff] [blame] | 486 | __nla_put(user_skb, OVS_PACKET_ATTR_USERDATA, |
| 487 | nla_len(upcall_info->userdata), |
| 488 | nla_data(upcall_info->userdata)); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 489 | |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 490 | if (upcall_info->egress_tun_info) { |
| 491 | nla = nla_nest_start(user_skb, OVS_PACKET_ATTR_EGRESS_TUN_KEY); |
Pravin B Shelar | fc4099f | 2015-10-22 18:17:16 -0700 | [diff] [blame] | 492 | err = ovs_nla_put_tunnel_info(user_skb, |
| 493 | upcall_info->egress_tun_info); |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 494 | BUG_ON(err); |
| 495 | nla_nest_end(user_skb, nla); |
| 496 | } |
| 497 | |
Neil McKee | ccea744 | 2015-05-26 20:59:43 -0700 | [diff] [blame] | 498 | if (upcall_info->actions_len) { |
| 499 | nla = nla_nest_start(user_skb, OVS_PACKET_ATTR_ACTIONS); |
| 500 | err = ovs_nla_put_actions(upcall_info->actions, |
| 501 | upcall_info->actions_len, |
| 502 | user_skb); |
| 503 | if (!err) |
| 504 | nla_nest_end(user_skb, nla); |
| 505 | else |
| 506 | nla_nest_cancel(user_skb, nla); |
| 507 | } |
| 508 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 509 | /* Add OVS_PACKET_ATTR_MRU */ |
| 510 | if (upcall_info->mru) { |
| 511 | if (nla_put_u16(user_skb, OVS_PACKET_ATTR_MRU, |
| 512 | upcall_info->mru)) { |
| 513 | err = -ENOBUFS; |
| 514 | goto out; |
| 515 | } |
| 516 | pad_packet(dp, user_skb); |
| 517 | } |
| 518 | |
William Tu | b95e592 | 2016-06-20 07:26:17 -0700 | [diff] [blame] | 519 | /* Add OVS_PACKET_ATTR_LEN when packet is truncated */ |
| 520 | if (cutlen > 0) { |
| 521 | if (nla_put_u32(user_skb, OVS_PACKET_ATTR_LEN, |
| 522 | skb->len)) { |
| 523 | err = -ENOBUFS; |
| 524 | goto out; |
| 525 | } |
| 526 | pad_packet(dp, user_skb); |
| 527 | } |
| 528 | |
Thomas Graf | bda56f1 | 2013-12-13 15:22:21 +0100 | [diff] [blame] | 529 | /* Only reserve room for attribute header, packet data is added |
| 530 | * in skb_zerocopy() */ |
| 531 | if (!(nla = nla_reserve(user_skb, OVS_PACKET_ATTR_PACKET, 0))) { |
| 532 | err = -ENOBUFS; |
| 533 | goto out; |
| 534 | } |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 535 | nla->nla_len = nla_attr_size(skb->len - cutlen); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 536 | |
William Tu | f2a4d08 | 2016-06-10 11:49:33 -0700 | [diff] [blame] | 537 | err = skb_zerocopy(user_skb, skb, skb->len - cutlen, hlen); |
Zoltan Kiss | 36d5fe6 | 2014-03-26 22:37:45 +0000 | [diff] [blame] | 538 | if (err) |
| 539 | goto out; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 540 | |
Thomas Graf | aea0bb4 | 2014-01-14 16:27:49 +0000 | [diff] [blame] | 541 | /* Pad OVS_PACKET_ATTR_PACKET if linear copy was performed */ |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 542 | pad_packet(dp, user_skb); |
Thomas Graf | aea0bb4 | 2014-01-14 16:27:49 +0000 | [diff] [blame] | 543 | |
Thomas Graf | bda56f1 | 2013-12-13 15:22:21 +0100 | [diff] [blame] | 544 | ((struct nlmsghdr *) user_skb->data)->nlmsg_len = user_skb->len; |
| 545 | |
Thomas Graf | 8055a89 | 2013-12-13 15:22:20 +0100 | [diff] [blame] | 546 | err = genlmsg_unicast(ovs_dp_get_net(dp), user_skb, upcall_info->portid); |
Li RongQing | 4ee45ea | 2014-09-02 20:52:28 +0800 | [diff] [blame] | 547 | user_skb = NULL; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 548 | out: |
Zoltan Kiss | 36d5fe6 | 2014-03-26 22:37:45 +0000 | [diff] [blame] | 549 | if (err) |
| 550 | skb_tx_error(skb); |
Li RongQing | 4ee45ea | 2014-09-02 20:52:28 +0800 | [diff] [blame] | 551 | kfree_skb(user_skb); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 552 | kfree_skb(nskb); |
| 553 | return err; |
| 554 | } |
| 555 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 556 | static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) |
| 557 | { |
| 558 | struct ovs_header *ovs_header = info->userhdr; |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 559 | struct net *net = sock_net(skb->sk); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 560 | struct nlattr **a = info->attrs; |
| 561 | struct sw_flow_actions *acts; |
| 562 | struct sk_buff *packet; |
| 563 | struct sw_flow *flow; |
Lorand Jakab | d98612b | 2014-10-06 05:45:32 -0700 | [diff] [blame] | 564 | struct sw_flow_actions *sf_acts; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 565 | struct datapath *dp; |
| 566 | struct ethhdr *eth; |
Pravin B Shelar | 83c8df2 | 2014-09-15 19:20:31 -0700 | [diff] [blame] | 567 | struct vport *input_vport; |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 568 | u16 mru = 0; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 569 | int len; |
| 570 | int err; |
Thomas Graf | 1ba3980 | 2015-01-14 13:56:19 +0000 | [diff] [blame] | 571 | bool log = !a[OVS_PACKET_ATTR_PROBE]; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 572 | |
| 573 | err = -EINVAL; |
| 574 | if (!a[OVS_PACKET_ATTR_PACKET] || !a[OVS_PACKET_ATTR_KEY] || |
Thomas Graf | dded45fc | 2013-03-29 14:46:47 +0100 | [diff] [blame] | 575 | !a[OVS_PACKET_ATTR_ACTIONS]) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 576 | goto err; |
| 577 | |
| 578 | len = nla_len(a[OVS_PACKET_ATTR_PACKET]); |
| 579 | packet = __dev_alloc_skb(NET_IP_ALIGN + len, GFP_KERNEL); |
| 580 | err = -ENOMEM; |
| 581 | if (!packet) |
| 582 | goto err; |
| 583 | skb_reserve(packet, NET_IP_ALIGN); |
| 584 | |
Thomas Graf | 32686a9 | 2013-03-29 14:46:48 +0100 | [diff] [blame] | 585 | nla_memcpy(__skb_put(packet, len), a[OVS_PACKET_ATTR_PACKET], len); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 586 | |
| 587 | skb_reset_mac_header(packet); |
| 588 | eth = eth_hdr(packet); |
| 589 | |
| 590 | /* Normally, setting the skb 'protocol' field would be handled by a |
| 591 | * call to eth_type_trans(), but it assumes there's a sending |
| 592 | * device, which we may not have. */ |
Alexander Duyck | 6713fc9 | 2015-05-04 14:34:05 -0700 | [diff] [blame] | 593 | if (eth_proto_is_802_3(eth->h_proto)) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 594 | packet->protocol = eth->h_proto; |
| 595 | else |
| 596 | packet->protocol = htons(ETH_P_802_2); |
| 597 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 598 | /* Set packet's mru */ |
| 599 | if (a[OVS_PACKET_ATTR_MRU]) { |
| 600 | mru = nla_get_u16(a[OVS_PACKET_ATTR_MRU]); |
| 601 | packet->ignore_df = 1; |
| 602 | } |
| 603 | OVS_CB(packet)->mru = mru; |
| 604 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 605 | /* Build an sw_flow for sending this packet. */ |
Jarno Rajahalme | 23dabf8 | 2014-03-27 12:35:23 -0700 | [diff] [blame] | 606 | flow = ovs_flow_alloc(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 607 | err = PTR_ERR(flow); |
| 608 | if (IS_ERR(flow)) |
| 609 | goto err_kfree_skb; |
| 610 | |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 611 | err = ovs_flow_key_extract_userspace(net, a[OVS_PACKET_ATTR_KEY], |
| 612 | packet, &flow->key, log); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 613 | if (err) |
| 614 | goto err_flow_free; |
| 615 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 616 | err = ovs_nla_copy_actions(net, a[OVS_PACKET_ATTR_ACTIONS], |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 617 | &flow->key, &acts, log); |
Pravin B Shelar | 74f84a5 | 2013-06-17 17:50:12 -0700 | [diff] [blame] | 618 | if (err) |
| 619 | goto err_flow_free; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 620 | |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 621 | rcu_assign_pointer(flow->sf_acts, acts); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 622 | packet->priority = flow->key.phy.priority; |
Ansis Atteka | 39c7caeb | 2012-11-26 11:24:11 -0800 | [diff] [blame] | 623 | packet->mark = flow->key.phy.skb_mark; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 624 | |
| 625 | rcu_read_lock(); |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 626 | dp = get_dp_rcu(net, ovs_header->dp_ifindex); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 627 | err = -ENODEV; |
| 628 | if (!dp) |
| 629 | goto err_unlock; |
| 630 | |
Pravin B Shelar | 83c8df2 | 2014-09-15 19:20:31 -0700 | [diff] [blame] | 631 | input_vport = ovs_vport_rcu(dp, flow->key.phy.in_port); |
| 632 | if (!input_vport) |
| 633 | input_vport = ovs_vport_rcu(dp, OVSP_LOCAL); |
| 634 | |
| 635 | if (!input_vport) |
| 636 | goto err_unlock; |
| 637 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 638 | packet->dev = input_vport->dev; |
Pravin B Shelar | 83c8df2 | 2014-09-15 19:20:31 -0700 | [diff] [blame] | 639 | OVS_CB(packet)->input_vport = input_vport; |
Lorand Jakab | d98612b | 2014-10-06 05:45:32 -0700 | [diff] [blame] | 640 | sf_acts = rcu_dereference(flow->sf_acts); |
Pravin B Shelar | 83c8df2 | 2014-09-15 19:20:31 -0700 | [diff] [blame] | 641 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 642 | local_bh_disable(); |
Lorand Jakab | d98612b | 2014-10-06 05:45:32 -0700 | [diff] [blame] | 643 | err = ovs_execute_actions(dp, packet, sf_acts, &flow->key); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 644 | local_bh_enable(); |
| 645 | rcu_read_unlock(); |
| 646 | |
Andy Zhou | 03f0d91 | 2013-08-07 20:01:00 -0700 | [diff] [blame] | 647 | ovs_flow_free(flow, false); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 648 | return err; |
| 649 | |
| 650 | err_unlock: |
| 651 | rcu_read_unlock(); |
| 652 | err_flow_free: |
Andy Zhou | 03f0d91 | 2013-08-07 20:01:00 -0700 | [diff] [blame] | 653 | ovs_flow_free(flow, false); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 654 | err_kfree_skb: |
| 655 | kfree_skb(packet); |
| 656 | err: |
| 657 | return err; |
| 658 | } |
| 659 | |
| 660 | static const struct nla_policy packet_policy[OVS_PACKET_ATTR_MAX + 1] = { |
Thomas Graf | dded45fc | 2013-03-29 14:46:47 +0100 | [diff] [blame] | 661 | [OVS_PACKET_ATTR_PACKET] = { .len = ETH_HLEN }, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 662 | [OVS_PACKET_ATTR_KEY] = { .type = NLA_NESTED }, |
| 663 | [OVS_PACKET_ATTR_ACTIONS] = { .type = NLA_NESTED }, |
Thomas Graf | 1ba3980 | 2015-01-14 13:56:19 +0000 | [diff] [blame] | 664 | [OVS_PACKET_ATTR_PROBE] = { .type = NLA_FLAG }, |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 665 | [OVS_PACKET_ATTR_MRU] = { .type = NLA_U16 }, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 666 | }; |
| 667 | |
Johannes Berg | 4534de8 | 2013-11-14 17:14:46 +0100 | [diff] [blame] | 668 | static const struct genl_ops dp_packet_genl_ops[] = { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 669 | { .cmd = OVS_PACKET_CMD_EXECUTE, |
Tycho Andersen | 4a92602 | 2016-02-05 09:20:52 -0700 | [diff] [blame] | 670 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 671 | .policy = packet_policy, |
| 672 | .doit = ovs_packet_cmd_execute |
| 673 | } |
| 674 | }; |
| 675 | |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 676 | static struct genl_family dp_packet_genl_family = { |
| 677 | .id = GENL_ID_GENERATE, |
| 678 | .hdrsize = sizeof(struct ovs_header), |
| 679 | .name = OVS_PACKET_FAMILY, |
| 680 | .version = OVS_PACKET_VERSION, |
| 681 | .maxattr = OVS_PACKET_ATTR_MAX, |
| 682 | .netnsok = true, |
| 683 | .parallel_ops = true, |
| 684 | .ops = dp_packet_genl_ops, |
| 685 | .n_ops = ARRAY_SIZE(dp_packet_genl_ops), |
| 686 | }; |
| 687 | |
Thomas Graf | 12eb18f | 2014-11-06 06:58:52 -0800 | [diff] [blame] | 688 | static void get_dp_stats(const struct datapath *dp, struct ovs_dp_stats *stats, |
Andy Zhou | 1bd7116 | 2013-10-22 10:42:46 -0700 | [diff] [blame] | 689 | struct ovs_dp_megaflow_stats *mega_stats) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 690 | { |
| 691 | int i; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 692 | |
Andy Zhou | 1bd7116 | 2013-10-22 10:42:46 -0700 | [diff] [blame] | 693 | memset(mega_stats, 0, sizeof(*mega_stats)); |
| 694 | |
Pravin B Shelar | b637e49 | 2013-10-04 00:14:23 -0700 | [diff] [blame] | 695 | stats->n_flows = ovs_flow_tbl_count(&dp->table); |
Andy Zhou | 1bd7116 | 2013-10-22 10:42:46 -0700 | [diff] [blame] | 696 | mega_stats->n_masks = ovs_flow_tbl_num_masks(&dp->table); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 697 | |
| 698 | stats->n_hit = stats->n_missed = stats->n_lost = 0; |
Andy Zhou | 1bd7116 | 2013-10-22 10:42:46 -0700 | [diff] [blame] | 699 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 700 | for_each_possible_cpu(i) { |
| 701 | const struct dp_stats_percpu *percpu_stats; |
| 702 | struct dp_stats_percpu local_stats; |
| 703 | unsigned int start; |
| 704 | |
| 705 | percpu_stats = per_cpu_ptr(dp->stats_percpu, i); |
| 706 | |
| 707 | do { |
Eric W. Biederman | 57a7744 | 2014-03-13 21:26:42 -0700 | [diff] [blame] | 708 | start = u64_stats_fetch_begin_irq(&percpu_stats->syncp); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 709 | local_stats = *percpu_stats; |
Eric W. Biederman | 57a7744 | 2014-03-13 21:26:42 -0700 | [diff] [blame] | 710 | } while (u64_stats_fetch_retry_irq(&percpu_stats->syncp, start)); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 711 | |
| 712 | stats->n_hit += local_stats.n_hit; |
| 713 | stats->n_missed += local_stats.n_missed; |
| 714 | stats->n_lost += local_stats.n_lost; |
Andy Zhou | 1bd7116 | 2013-10-22 10:42:46 -0700 | [diff] [blame] | 715 | mega_stats->n_mask_hit += local_stats.n_mask_hit; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 716 | } |
| 717 | } |
| 718 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 719 | static bool should_fill_key(const struct sw_flow_id *sfid, uint32_t ufid_flags) |
Thomas Graf | c3ff8cf | 2013-03-29 14:46:49 +0100 | [diff] [blame] | 720 | { |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 721 | return ovs_identifier_is_ufid(sfid) && |
| 722 | !(ufid_flags & OVS_UFID_F_OMIT_KEY); |
| 723 | } |
| 724 | |
| 725 | static bool should_fill_mask(uint32_t ufid_flags) |
| 726 | { |
| 727 | return !(ufid_flags & OVS_UFID_F_OMIT_MASK); |
| 728 | } |
| 729 | |
| 730 | static bool should_fill_actions(uint32_t ufid_flags) |
| 731 | { |
| 732 | return !(ufid_flags & OVS_UFID_F_OMIT_ACTIONS); |
| 733 | } |
| 734 | |
| 735 | static size_t ovs_flow_cmd_msg_size(const struct sw_flow_actions *acts, |
| 736 | const struct sw_flow_id *sfid, |
| 737 | uint32_t ufid_flags) |
| 738 | { |
| 739 | size_t len = NLMSG_ALIGN(sizeof(struct ovs_header)); |
| 740 | |
| 741 | /* OVS_FLOW_ATTR_UFID */ |
| 742 | if (sfid && ovs_identifier_is_ufid(sfid)) |
| 743 | len += nla_total_size(sfid->ufid_len); |
| 744 | |
| 745 | /* OVS_FLOW_ATTR_KEY */ |
| 746 | if (!sfid || should_fill_key(sfid, ufid_flags)) |
| 747 | len += nla_total_size(ovs_key_attr_size()); |
| 748 | |
| 749 | /* OVS_FLOW_ATTR_MASK */ |
| 750 | if (should_fill_mask(ufid_flags)) |
| 751 | len += nla_total_size(ovs_key_attr_size()); |
| 752 | |
| 753 | /* OVS_FLOW_ATTR_ACTIONS */ |
| 754 | if (should_fill_actions(ufid_flags)) |
Joe Stringer | 8e2fed1 | 2015-08-26 11:31:44 -0700 | [diff] [blame] | 755 | len += nla_total_size(acts->orig_len); |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 756 | |
| 757 | return len |
Nicolas Dichtel | 66c7a5e | 2016-04-26 10:06:15 +0200 | [diff] [blame] | 758 | + nla_total_size_64bit(sizeof(struct ovs_flow_stats)) /* OVS_FLOW_ATTR_STATS */ |
Thomas Graf | c3ff8cf | 2013-03-29 14:46:49 +0100 | [diff] [blame] | 759 | + nla_total_size(1) /* OVS_FLOW_ATTR_TCP_FLAGS */ |
Nicolas Dichtel | 66c7a5e | 2016-04-26 10:06:15 +0200 | [diff] [blame] | 760 | + nla_total_size_64bit(8); /* OVS_FLOW_ATTR_USED */ |
Thomas Graf | c3ff8cf | 2013-03-29 14:46:49 +0100 | [diff] [blame] | 761 | } |
| 762 | |
Jarno Rajahalme | bb6f9a7 | 2014-05-05 11:32:17 -0700 | [diff] [blame] | 763 | /* Called with ovs_mutex or RCU read lock. */ |
Joe Stringer | ca7105f | 2014-09-08 13:09:37 -0700 | [diff] [blame] | 764 | static int ovs_flow_cmd_fill_stats(const struct sw_flow *flow, |
| 765 | struct sk_buff *skb) |
| 766 | { |
| 767 | struct ovs_flow_stats stats; |
| 768 | __be16 tcp_flags; |
| 769 | unsigned long used; |
Andy Zhou | 03f0d91 | 2013-08-07 20:01:00 -0700 | [diff] [blame] | 770 | |
Pravin B Shelar | e298e50 | 2013-10-29 17:22:21 -0700 | [diff] [blame] | 771 | ovs_flow_stats_get(flow, &stats, &used, &tcp_flags); |
Jarno Rajahalme | 0e9796b | 2014-05-05 14:28:07 -0700 | [diff] [blame] | 772 | |
David S. Miller | 028d6a6 | 2012-03-29 23:20:48 -0400 | [diff] [blame] | 773 | if (used && |
Nicolas Dichtel | 0238b72 | 2016-04-25 10:25:17 +0200 | [diff] [blame] | 774 | nla_put_u64_64bit(skb, OVS_FLOW_ATTR_USED, ovs_flow_used_time(used), |
| 775 | OVS_FLOW_ATTR_PAD)) |
Joe Stringer | ca7105f | 2014-09-08 13:09:37 -0700 | [diff] [blame] | 776 | return -EMSGSIZE; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 777 | |
David S. Miller | 028d6a6 | 2012-03-29 23:20:48 -0400 | [diff] [blame] | 778 | if (stats.n_packets && |
Nicolas Dichtel | 66c7a5e | 2016-04-26 10:06:15 +0200 | [diff] [blame] | 779 | nla_put_64bit(skb, OVS_FLOW_ATTR_STATS, |
| 780 | sizeof(struct ovs_flow_stats), &stats, |
| 781 | OVS_FLOW_ATTR_PAD)) |
Joe Stringer | ca7105f | 2014-09-08 13:09:37 -0700 | [diff] [blame] | 782 | return -EMSGSIZE; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 783 | |
Pravin B Shelar | e298e50 | 2013-10-29 17:22:21 -0700 | [diff] [blame] | 784 | if ((u8)ntohs(tcp_flags) && |
| 785 | nla_put_u8(skb, OVS_FLOW_ATTR_TCP_FLAGS, (u8)ntohs(tcp_flags))) |
Joe Stringer | ca7105f | 2014-09-08 13:09:37 -0700 | [diff] [blame] | 786 | return -EMSGSIZE; |
| 787 | |
| 788 | return 0; |
| 789 | } |
| 790 | |
| 791 | /* Called with ovs_mutex or RCU read lock. */ |
| 792 | static int ovs_flow_cmd_fill_actions(const struct sw_flow *flow, |
| 793 | struct sk_buff *skb, int skb_orig_len) |
| 794 | { |
| 795 | struct nlattr *start; |
| 796 | int err; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 797 | |
| 798 | /* If OVS_FLOW_ATTR_ACTIONS doesn't fit, skip dumping the actions if |
| 799 | * this is the first flow to be dumped into 'skb'. This is unusual for |
| 800 | * Netlink but individual action lists can be longer than |
| 801 | * NLMSG_GOODSIZE and thus entirely undumpable if we didn't do this. |
| 802 | * The userspace caller can always fetch the actions separately if it |
| 803 | * really wants them. (Most userspace callers in fact don't care.) |
| 804 | * |
| 805 | * This can only fail for dump operations because the skb is always |
| 806 | * properly sized for single flows. |
| 807 | */ |
Pravin B Shelar | 74f84a5 | 2013-06-17 17:50:12 -0700 | [diff] [blame] | 808 | start = nla_nest_start(skb, OVS_FLOW_ATTR_ACTIONS); |
| 809 | if (start) { |
Pravin B Shelar | d57170b | 2013-07-30 15:39:39 -0700 | [diff] [blame] | 810 | const struct sw_flow_actions *sf_acts; |
| 811 | |
Jesse Gross | 663efa3 | 2013-12-03 10:58:53 -0800 | [diff] [blame] | 812 | sf_acts = rcu_dereference_ovsl(flow->sf_acts); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 813 | err = ovs_nla_put_actions(sf_acts->actions, |
| 814 | sf_acts->actions_len, skb); |
Jarno Rajahalme | 0e9796b | 2014-05-05 14:28:07 -0700 | [diff] [blame] | 815 | |
Pravin B Shelar | 74f84a5 | 2013-06-17 17:50:12 -0700 | [diff] [blame] | 816 | if (!err) |
| 817 | nla_nest_end(skb, start); |
| 818 | else { |
| 819 | if (skb_orig_len) |
Joe Stringer | ca7105f | 2014-09-08 13:09:37 -0700 | [diff] [blame] | 820 | return err; |
Pravin B Shelar | 74f84a5 | 2013-06-17 17:50:12 -0700 | [diff] [blame] | 821 | |
| 822 | nla_nest_cancel(skb, start); |
| 823 | } |
Joe Stringer | ca7105f | 2014-09-08 13:09:37 -0700 | [diff] [blame] | 824 | } else if (skb_orig_len) { |
| 825 | return -EMSGSIZE; |
| 826 | } |
| 827 | |
| 828 | return 0; |
| 829 | } |
| 830 | |
| 831 | /* Called with ovs_mutex or RCU read lock. */ |
| 832 | static int ovs_flow_cmd_fill_info(const struct sw_flow *flow, int dp_ifindex, |
| 833 | struct sk_buff *skb, u32 portid, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 834 | u32 seq, u32 flags, u8 cmd, u32 ufid_flags) |
Joe Stringer | ca7105f | 2014-09-08 13:09:37 -0700 | [diff] [blame] | 835 | { |
| 836 | const int skb_orig_len = skb->len; |
| 837 | struct ovs_header *ovs_header; |
| 838 | int err; |
| 839 | |
| 840 | ovs_header = genlmsg_put(skb, portid, seq, &dp_flow_genl_family, |
| 841 | flags, cmd); |
| 842 | if (!ovs_header) |
| 843 | return -EMSGSIZE; |
| 844 | |
| 845 | ovs_header->dp_ifindex = dp_ifindex; |
| 846 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 847 | err = ovs_nla_put_identifier(flow, skb); |
Joe Stringer | 5b4237b | 2015-01-21 16:42:48 -0800 | [diff] [blame] | 848 | if (err) |
| 849 | goto error; |
| 850 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 851 | if (should_fill_key(&flow->id, ufid_flags)) { |
| 852 | err = ovs_nla_put_masked_key(flow, skb); |
| 853 | if (err) |
| 854 | goto error; |
| 855 | } |
| 856 | |
| 857 | if (should_fill_mask(ufid_flags)) { |
| 858 | err = ovs_nla_put_mask(flow, skb); |
| 859 | if (err) |
| 860 | goto error; |
| 861 | } |
Joe Stringer | ca7105f | 2014-09-08 13:09:37 -0700 | [diff] [blame] | 862 | |
| 863 | err = ovs_flow_cmd_fill_stats(flow, skb); |
| 864 | if (err) |
| 865 | goto error; |
| 866 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 867 | if (should_fill_actions(ufid_flags)) { |
| 868 | err = ovs_flow_cmd_fill_actions(flow, skb, skb_orig_len); |
| 869 | if (err) |
| 870 | goto error; |
| 871 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 872 | |
Johannes Berg | 053c095 | 2015-01-16 22:09:00 +0100 | [diff] [blame] | 873 | genlmsg_end(skb, ovs_header); |
| 874 | return 0; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 875 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 876 | error: |
| 877 | genlmsg_cancel(skb, ovs_header); |
| 878 | return err; |
| 879 | } |
| 880 | |
Jarno Rajahalme | 0e9796b | 2014-05-05 14:28:07 -0700 | [diff] [blame] | 881 | /* May not be called with RCU read lock. */ |
| 882 | static struct sk_buff *ovs_flow_cmd_alloc_info(const struct sw_flow_actions *acts, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 883 | const struct sw_flow_id *sfid, |
Jarno Rajahalme | fb5d1e9 | 2014-05-05 13:13:14 -0700 | [diff] [blame] | 884 | struct genl_info *info, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 885 | bool always, |
| 886 | uint32_t ufid_flags) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 887 | { |
Jarno Rajahalme | fb5d1e9 | 2014-05-05 13:13:14 -0700 | [diff] [blame] | 888 | struct sk_buff *skb; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 889 | size_t len; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 890 | |
Samuel Gauthier | 9b67aa4 | 2014-09-18 10:31:04 +0200 | [diff] [blame] | 891 | if (!always && !ovs_must_notify(&dp_flow_genl_family, info, 0)) |
Jarno Rajahalme | fb5d1e9 | 2014-05-05 13:13:14 -0700 | [diff] [blame] | 892 | return NULL; |
| 893 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 894 | len = ovs_flow_cmd_msg_size(acts, sfid, ufid_flags); |
Florian Westphal | 551ddc0 | 2016-02-18 15:03:25 +0100 | [diff] [blame] | 895 | skb = genlmsg_new(len, GFP_KERNEL); |
Jarno Rajahalme | fb5d1e9 | 2014-05-05 13:13:14 -0700 | [diff] [blame] | 896 | if (!skb) |
| 897 | return ERR_PTR(-ENOMEM); |
| 898 | |
| 899 | return skb; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 900 | } |
| 901 | |
Jarno Rajahalme | 0e9796b | 2014-05-05 14:28:07 -0700 | [diff] [blame] | 902 | /* Called with ovs_mutex. */ |
| 903 | static struct sk_buff *ovs_flow_cmd_build_info(const struct sw_flow *flow, |
| 904 | int dp_ifindex, |
| 905 | struct genl_info *info, u8 cmd, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 906 | bool always, u32 ufid_flags) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 907 | { |
| 908 | struct sk_buff *skb; |
| 909 | int retval; |
| 910 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 911 | skb = ovs_flow_cmd_alloc_info(ovsl_dereference(flow->sf_acts), |
| 912 | &flow->id, info, always, ufid_flags); |
Himangi Saraogi | d0e992a | 2014-07-27 12:37:46 +0530 | [diff] [blame] | 913 | if (IS_ERR_OR_NULL(skb)) |
Jarno Rajahalme | fb5d1e9 | 2014-05-05 13:13:14 -0700 | [diff] [blame] | 914 | return skb; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 915 | |
Jarno Rajahalme | 0e9796b | 2014-05-05 14:28:07 -0700 | [diff] [blame] | 916 | retval = ovs_flow_cmd_fill_info(flow, dp_ifindex, skb, |
| 917 | info->snd_portid, info->snd_seq, 0, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 918 | cmd, ufid_flags); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 919 | BUG_ON(retval < 0); |
| 920 | return skb; |
| 921 | } |
| 922 | |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 923 | static int ovs_flow_cmd_new(struct sk_buff *skb, struct genl_info *info) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 924 | { |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 925 | struct net *net = sock_net(skb->sk); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 926 | struct nlattr **a = info->attrs; |
| 927 | struct ovs_header *ovs_header = info->userhdr; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 928 | struct sw_flow *flow = NULL, *new_flow; |
Andy Zhou | 03f0d91 | 2013-08-07 20:01:00 -0700 | [diff] [blame] | 929 | struct sw_flow_mask mask; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 930 | struct sk_buff *reply; |
| 931 | struct datapath *dp; |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 932 | struct sw_flow_actions *acts; |
| 933 | struct sw_flow_match match; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 934 | u32 ufid_flags = ovs_nla_get_ufid_flags(a[OVS_FLOW_ATTR_UFID_FLAGS]); |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 935 | int error; |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 936 | bool log = !a[OVS_FLOW_ATTR_PROBE]; |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 937 | |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 938 | /* Must have key and actions. */ |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 939 | error = -EINVAL; |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 940 | if (!a[OVS_FLOW_ATTR_KEY]) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 941 | OVS_NLERR(log, "Flow key attr not present in new flow."); |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 942 | goto error; |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 943 | } |
| 944 | if (!a[OVS_FLOW_ATTR_ACTIONS]) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 945 | OVS_NLERR(log, "Flow actions attr not present in new flow."); |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 946 | goto error; |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 947 | } |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 948 | |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 949 | /* Most of the time we need to allocate a new flow, do it before |
| 950 | * locking. |
| 951 | */ |
| 952 | new_flow = ovs_flow_alloc(); |
| 953 | if (IS_ERR(new_flow)) { |
| 954 | error = PTR_ERR(new_flow); |
| 955 | goto error; |
| 956 | } |
| 957 | |
| 958 | /* Extract key. */ |
pravin shelar | 2279994 | 2016-09-19 13:51:00 -0700 | [diff] [blame] | 959 | ovs_match_init(&match, &new_flow->key, false, &mask); |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 960 | error = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 961 | a[OVS_FLOW_ATTR_MASK], log); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 962 | if (error) |
| 963 | goto err_kfree_flow; |
| 964 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 965 | /* Extract flow identifier. */ |
| 966 | error = ovs_nla_get_identifier(&new_flow->id, a[OVS_FLOW_ATTR_UFID], |
pravin shelar | 190aa3e | 2016-09-19 13:50:59 -0700 | [diff] [blame] | 967 | &new_flow->key, log); |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 968 | if (error) |
| 969 | goto err_kfree_flow; |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 970 | |
pravin shelar | 190aa3e | 2016-09-19 13:50:59 -0700 | [diff] [blame] | 971 | /* unmasked key is needed to match when ufid is not used. */ |
| 972 | if (ovs_identifier_is_key(&new_flow->id)) |
| 973 | match.key = new_flow->id.unmasked_key; |
| 974 | |
| 975 | ovs_flow_mask_key(&new_flow->key, &new_flow->key, true, &mask); |
| 976 | |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 977 | /* Validate actions. */ |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 978 | error = ovs_nla_copy_actions(net, a[OVS_FLOW_ATTR_ACTIONS], |
| 979 | &new_flow->key, &acts, log); |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 980 | if (error) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 981 | OVS_NLERR(log, "Flow actions may not be safe on all matching packets."); |
Pravin B Shelar | 2fdb957 | 2014-10-19 11:19:51 -0700 | [diff] [blame] | 982 | goto err_kfree_flow; |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 983 | } |
| 984 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 985 | reply = ovs_flow_cmd_alloc_info(acts, &new_flow->id, info, false, |
| 986 | ufid_flags); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 987 | if (IS_ERR(reply)) { |
| 988 | error = PTR_ERR(reply); |
| 989 | goto err_kfree_acts; |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 990 | } |
| 991 | |
| 992 | ovs_lock(); |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 993 | dp = get_dp(net, ovs_header->dp_ifindex); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 994 | if (unlikely(!dp)) { |
| 995 | error = -ENODEV; |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 996 | goto err_unlock_ovs; |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 997 | } |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 998 | |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 999 | /* Check if this is a duplicate flow */ |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1000 | if (ovs_identifier_is_ufid(&new_flow->id)) |
| 1001 | flow = ovs_flow_tbl_lookup_ufid(&dp->table, &new_flow->id); |
| 1002 | if (!flow) |
pravin shelar | 190aa3e | 2016-09-19 13:50:59 -0700 | [diff] [blame] | 1003 | flow = ovs_flow_tbl_lookup(&dp->table, &new_flow->key); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1004 | if (likely(!flow)) { |
| 1005 | rcu_assign_pointer(new_flow->sf_acts, acts); |
| 1006 | |
| 1007 | /* Put flow in bucket. */ |
| 1008 | error = ovs_flow_tbl_insert(&dp->table, new_flow, &mask); |
| 1009 | if (unlikely(error)) { |
| 1010 | acts = NULL; |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1011 | goto err_unlock_ovs; |
| 1012 | } |
| 1013 | |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1014 | if (unlikely(reply)) { |
| 1015 | error = ovs_flow_cmd_fill_info(new_flow, |
| 1016 | ovs_header->dp_ifindex, |
| 1017 | reply, info->snd_portid, |
| 1018 | info->snd_seq, 0, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1019 | OVS_FLOW_CMD_NEW, |
| 1020 | ufid_flags); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1021 | BUG_ON(error < 0); |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1022 | } |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1023 | ovs_unlock(); |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1024 | } else { |
| 1025 | struct sw_flow_actions *old_acts; |
| 1026 | |
| 1027 | /* Bail out if we're not allowed to modify an existing flow. |
| 1028 | * We accept NLM_F_CREATE in place of the intended NLM_F_EXCL |
| 1029 | * because Generic Netlink treats the latter as a dump |
| 1030 | * request. We also accept NLM_F_EXCL in case that bug ever |
| 1031 | * gets fixed. |
| 1032 | */ |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1033 | if (unlikely(info->nlhdr->nlmsg_flags & (NLM_F_CREATE |
| 1034 | | NLM_F_EXCL))) { |
| 1035 | error = -EEXIST; |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1036 | goto err_unlock_ovs; |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1037 | } |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1038 | /* The flow identifier has to be the same for flow updates. |
| 1039 | * Look for any overlapping flow. |
| 1040 | */ |
| 1041 | if (unlikely(!ovs_flow_cmp(flow, &match))) { |
| 1042 | if (ovs_identifier_is_key(&flow->id)) |
| 1043 | flow = ovs_flow_tbl_lookup_exact(&dp->table, |
| 1044 | &match); |
| 1045 | else /* UFID matches but key is different */ |
| 1046 | flow = NULL; |
Alex Wang | 4a46b24 | 2014-06-30 20:30:29 -0700 | [diff] [blame] | 1047 | if (!flow) { |
| 1048 | error = -ENOENT; |
| 1049 | goto err_unlock_ovs; |
| 1050 | } |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1051 | } |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1052 | /* Update actions. */ |
| 1053 | old_acts = ovsl_dereference(flow->sf_acts); |
| 1054 | rcu_assign_pointer(flow->sf_acts, acts); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1055 | |
| 1056 | if (unlikely(reply)) { |
| 1057 | error = ovs_flow_cmd_fill_info(flow, |
| 1058 | ovs_header->dp_ifindex, |
| 1059 | reply, info->snd_portid, |
| 1060 | info->snd_seq, 0, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1061 | OVS_FLOW_CMD_NEW, |
| 1062 | ufid_flags); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1063 | BUG_ON(error < 0); |
| 1064 | } |
| 1065 | ovs_unlock(); |
| 1066 | |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1067 | ovs_nla_free_flow_actions_rcu(old_acts); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1068 | ovs_flow_free(new_flow, false); |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1069 | } |
| 1070 | |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1071 | if (reply) |
| 1072 | ovs_notify(&dp_flow_genl_family, reply, info); |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1073 | return 0; |
| 1074 | |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1075 | err_unlock_ovs: |
| 1076 | ovs_unlock(); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1077 | kfree_skb(reply); |
| 1078 | err_kfree_acts: |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1079 | ovs_nla_free_flow_actions(acts); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1080 | err_kfree_flow: |
| 1081 | ovs_flow_free(new_flow, false); |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1082 | error: |
| 1083 | return error; |
| 1084 | } |
| 1085 | |
Pravin B Shelar | 2fdb957 | 2014-10-19 11:19:51 -0700 | [diff] [blame] | 1086 | /* Factor out action copy to avoid "Wframe-larger-than=1024" warning. */ |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1087 | static struct sw_flow_actions *get_flow_actions(struct net *net, |
| 1088 | const struct nlattr *a, |
Jesse Gross | 6b205b2 | 2014-10-03 15:35:32 -0700 | [diff] [blame] | 1089 | const struct sw_flow_key *key, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1090 | const struct sw_flow_mask *mask, |
| 1091 | bool log) |
Jesse Gross | 6b205b2 | 2014-10-03 15:35:32 -0700 | [diff] [blame] | 1092 | { |
| 1093 | struct sw_flow_actions *acts; |
| 1094 | struct sw_flow_key masked_key; |
| 1095 | int error; |
| 1096 | |
Jesse Gross | ae5f2fb | 2015-09-21 20:21:20 -0700 | [diff] [blame] | 1097 | ovs_flow_mask_key(&masked_key, key, true, mask); |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1098 | error = ovs_nla_copy_actions(net, a, &masked_key, &acts, log); |
Jesse Gross | 6b205b2 | 2014-10-03 15:35:32 -0700 | [diff] [blame] | 1099 | if (error) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1100 | OVS_NLERR(log, |
| 1101 | "Actions may not be safe on all matching packets"); |
Jesse Gross | 6b205b2 | 2014-10-03 15:35:32 -0700 | [diff] [blame] | 1102 | return ERR_PTR(error); |
| 1103 | } |
| 1104 | |
| 1105 | return acts; |
| 1106 | } |
| 1107 | |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1108 | static int ovs_flow_cmd_set(struct sk_buff *skb, struct genl_info *info) |
| 1109 | { |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1110 | struct net *net = sock_net(skb->sk); |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1111 | struct nlattr **a = info->attrs; |
| 1112 | struct ovs_header *ovs_header = info->userhdr; |
Jesse Gross | 6b205b2 | 2014-10-03 15:35:32 -0700 | [diff] [blame] | 1113 | struct sw_flow_key key; |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1114 | struct sw_flow *flow; |
| 1115 | struct sw_flow_mask mask; |
| 1116 | struct sk_buff *reply = NULL; |
| 1117 | struct datapath *dp; |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1118 | struct sw_flow_actions *old_acts = NULL, *acts = NULL; |
Andy Zhou | 03f0d91 | 2013-08-07 20:01:00 -0700 | [diff] [blame] | 1119 | struct sw_flow_match match; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1120 | struct sw_flow_id sfid; |
| 1121 | u32 ufid_flags = ovs_nla_get_ufid_flags(a[OVS_FLOW_ATTR_UFID_FLAGS]); |
Samuel Gauthier | 6f15cdb | 2016-03-10 17:14:59 +0100 | [diff] [blame] | 1122 | int error = 0; |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1123 | bool log = !a[OVS_FLOW_ATTR_PROBE]; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1124 | bool ufid_present; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1125 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1126 | ufid_present = ovs_nla_get_ufid(&sfid, a[OVS_FLOW_ATTR_UFID], log); |
Samuel Gauthier | 6f15cdb | 2016-03-10 17:14:59 +0100 | [diff] [blame] | 1127 | if (a[OVS_FLOW_ATTR_KEY]) { |
pravin shelar | 2279994 | 2016-09-19 13:51:00 -0700 | [diff] [blame] | 1128 | ovs_match_init(&match, &key, true, &mask); |
Samuel Gauthier | 6f15cdb | 2016-03-10 17:14:59 +0100 | [diff] [blame] | 1129 | error = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], |
| 1130 | a[OVS_FLOW_ATTR_MASK], log); |
| 1131 | } else if (!ufid_present) { |
| 1132 | OVS_NLERR(log, |
| 1133 | "Flow set message rejected, Key attribute missing."); |
| 1134 | error = -EINVAL; |
| 1135 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1136 | if (error) |
| 1137 | goto error; |
| 1138 | |
| 1139 | /* Validate actions. */ |
| 1140 | if (a[OVS_FLOW_ATTR_ACTIONS]) { |
Samuel Gauthier | 6f15cdb | 2016-03-10 17:14:59 +0100 | [diff] [blame] | 1141 | if (!a[OVS_FLOW_ATTR_KEY]) { |
| 1142 | OVS_NLERR(log, |
| 1143 | "Flow key attribute not present in set flow."); |
| 1144 | error = -EINVAL; |
| 1145 | goto error; |
| 1146 | } |
| 1147 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1148 | acts = get_flow_actions(net, a[OVS_FLOW_ATTR_ACTIONS], &key, |
| 1149 | &mask, log); |
Jesse Gross | 6b205b2 | 2014-10-03 15:35:32 -0700 | [diff] [blame] | 1150 | if (IS_ERR(acts)) { |
| 1151 | error = PTR_ERR(acts); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1152 | goto error; |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1153 | } |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1154 | |
Pravin B Shelar | 2fdb957 | 2014-10-19 11:19:51 -0700 | [diff] [blame] | 1155 | /* Can allocate before locking if have acts. */ |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1156 | reply = ovs_flow_cmd_alloc_info(acts, &sfid, info, false, |
| 1157 | ufid_flags); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1158 | if (IS_ERR(reply)) { |
| 1159 | error = PTR_ERR(reply); |
| 1160 | goto err_kfree_acts; |
Andy Zhou | 03f0d91 | 2013-08-07 20:01:00 -0700 | [diff] [blame] | 1161 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1162 | } |
| 1163 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1164 | ovs_lock(); |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1165 | dp = get_dp(net, ovs_header->dp_ifindex); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1166 | if (unlikely(!dp)) { |
| 1167 | error = -ENODEV; |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1168 | goto err_unlock_ovs; |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1169 | } |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1170 | /* Check that the flow exists. */ |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1171 | if (ufid_present) |
| 1172 | flow = ovs_flow_tbl_lookup_ufid(&dp->table, &sfid); |
| 1173 | else |
| 1174 | flow = ovs_flow_tbl_lookup_exact(&dp->table, &match); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1175 | if (unlikely(!flow)) { |
| 1176 | error = -ENOENT; |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1177 | goto err_unlock_ovs; |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1178 | } |
Alex Wang | 4a46b24 | 2014-06-30 20:30:29 -0700 | [diff] [blame] | 1179 | |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1180 | /* Update actions, if present. */ |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1181 | if (likely(acts)) { |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1182 | old_acts = ovsl_dereference(flow->sf_acts); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1183 | rcu_assign_pointer(flow->sf_acts, acts); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1184 | |
| 1185 | if (unlikely(reply)) { |
| 1186 | error = ovs_flow_cmd_fill_info(flow, |
| 1187 | ovs_header->dp_ifindex, |
| 1188 | reply, info->snd_portid, |
| 1189 | info->snd_seq, 0, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1190 | OVS_FLOW_CMD_NEW, |
| 1191 | ufid_flags); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1192 | BUG_ON(error < 0); |
| 1193 | } |
| 1194 | } else { |
| 1195 | /* Could not alloc without acts before locking. */ |
| 1196 | reply = ovs_flow_cmd_build_info(flow, ovs_header->dp_ifindex, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1197 | info, OVS_FLOW_CMD_NEW, false, |
| 1198 | ufid_flags); |
| 1199 | |
Viresh Kumar | b5ffe63 | 2015-08-12 15:59:47 +0530 | [diff] [blame] | 1200 | if (IS_ERR(reply)) { |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1201 | error = PTR_ERR(reply); |
| 1202 | goto err_unlock_ovs; |
| 1203 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1204 | } |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1205 | |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1206 | /* Clear stats. */ |
| 1207 | if (a[OVS_FLOW_ATTR_CLEAR]) |
| 1208 | ovs_flow_stats_clear(flow); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1209 | ovs_unlock(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1210 | |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1211 | if (reply) |
| 1212 | ovs_notify(&dp_flow_genl_family, reply, info); |
| 1213 | if (old_acts) |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1214 | ovs_nla_free_flow_actions_rcu(old_acts); |
Jarno Rajahalme | fb5d1e9 | 2014-05-05 13:13:14 -0700 | [diff] [blame] | 1215 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1216 | return 0; |
| 1217 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1218 | err_unlock_ovs: |
| 1219 | ovs_unlock(); |
Jarno Rajahalme | 893f139 | 2014-05-05 15:22:25 -0700 | [diff] [blame] | 1220 | kfree_skb(reply); |
| 1221 | err_kfree_acts: |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1222 | ovs_nla_free_flow_actions(acts); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1223 | error: |
| 1224 | return error; |
| 1225 | } |
| 1226 | |
| 1227 | static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info) |
| 1228 | { |
| 1229 | struct nlattr **a = info->attrs; |
| 1230 | struct ovs_header *ovs_header = info->userhdr; |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 1231 | struct net *net = sock_net(skb->sk); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1232 | struct sw_flow_key key; |
| 1233 | struct sk_buff *reply; |
| 1234 | struct sw_flow *flow; |
| 1235 | struct datapath *dp; |
Andy Zhou | 03f0d91 | 2013-08-07 20:01:00 -0700 | [diff] [blame] | 1236 | struct sw_flow_match match; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1237 | struct sw_flow_id ufid; |
| 1238 | u32 ufid_flags = ovs_nla_get_ufid_flags(a[OVS_FLOW_ATTR_UFID_FLAGS]); |
| 1239 | int err = 0; |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1240 | bool log = !a[OVS_FLOW_ATTR_PROBE]; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1241 | bool ufid_present; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1242 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1243 | ufid_present = ovs_nla_get_ufid(&ufid, a[OVS_FLOW_ATTR_UFID], log); |
| 1244 | if (a[OVS_FLOW_ATTR_KEY]) { |
pravin shelar | 2279994 | 2016-09-19 13:51:00 -0700 | [diff] [blame] | 1245 | ovs_match_init(&match, &key, true, NULL); |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 1246 | err = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], NULL, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1247 | log); |
| 1248 | } else if (!ufid_present) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1249 | OVS_NLERR(log, |
| 1250 | "Flow get message rejected, Key attribute missing."); |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1251 | err = -EINVAL; |
Andy Zhou | 03f0d91 | 2013-08-07 20:01:00 -0700 | [diff] [blame] | 1252 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1253 | if (err) |
| 1254 | return err; |
| 1255 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1256 | ovs_lock(); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1257 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1258 | if (!dp) { |
| 1259 | err = -ENODEV; |
| 1260 | goto unlock; |
| 1261 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1262 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1263 | if (ufid_present) |
| 1264 | flow = ovs_flow_tbl_lookup_ufid(&dp->table, &ufid); |
| 1265 | else |
| 1266 | flow = ovs_flow_tbl_lookup_exact(&dp->table, &match); |
Alex Wang | 4a46b24 | 2014-06-30 20:30:29 -0700 | [diff] [blame] | 1267 | if (!flow) { |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1268 | err = -ENOENT; |
| 1269 | goto unlock; |
| 1270 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1271 | |
Jarno Rajahalme | 0e9796b | 2014-05-05 14:28:07 -0700 | [diff] [blame] | 1272 | reply = ovs_flow_cmd_build_info(flow, ovs_header->dp_ifindex, info, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1273 | OVS_FLOW_CMD_NEW, true, ufid_flags); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1274 | if (IS_ERR(reply)) { |
| 1275 | err = PTR_ERR(reply); |
| 1276 | goto unlock; |
| 1277 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1278 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1279 | ovs_unlock(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1280 | return genlmsg_reply(reply, info); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1281 | unlock: |
| 1282 | ovs_unlock(); |
| 1283 | return err; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1284 | } |
| 1285 | |
| 1286 | static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info) |
| 1287 | { |
| 1288 | struct nlattr **a = info->attrs; |
| 1289 | struct ovs_header *ovs_header = info->userhdr; |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 1290 | struct net *net = sock_net(skb->sk); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1291 | struct sw_flow_key key; |
| 1292 | struct sk_buff *reply; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1293 | struct sw_flow *flow = NULL; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1294 | struct datapath *dp; |
Andy Zhou | 03f0d91 | 2013-08-07 20:01:00 -0700 | [diff] [blame] | 1295 | struct sw_flow_match match; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1296 | struct sw_flow_id ufid; |
| 1297 | u32 ufid_flags = ovs_nla_get_ufid_flags(a[OVS_FLOW_ATTR_UFID_FLAGS]); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1298 | int err; |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1299 | bool log = !a[OVS_FLOW_ATTR_PROBE]; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1300 | bool ufid_present; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1301 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1302 | ufid_present = ovs_nla_get_ufid(&ufid, a[OVS_FLOW_ATTR_UFID], log); |
| 1303 | if (a[OVS_FLOW_ATTR_KEY]) { |
pravin shelar | 2279994 | 2016-09-19 13:51:00 -0700 | [diff] [blame] | 1304 | ovs_match_init(&match, &key, true, NULL); |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 1305 | err = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], |
| 1306 | NULL, log); |
Jarno Rajahalme | aed0677 | 2014-05-05 14:40:13 -0700 | [diff] [blame] | 1307 | if (unlikely(err)) |
| 1308 | return err; |
| 1309 | } |
| 1310 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1311 | ovs_lock(); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1312 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
Jarno Rajahalme | aed0677 | 2014-05-05 14:40:13 -0700 | [diff] [blame] | 1313 | if (unlikely(!dp)) { |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1314 | err = -ENODEV; |
| 1315 | goto unlock; |
| 1316 | } |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1317 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1318 | if (unlikely(!a[OVS_FLOW_ATTR_KEY] && !ufid_present)) { |
Pravin B Shelar | b637e49 | 2013-10-04 00:14:23 -0700 | [diff] [blame] | 1319 | err = ovs_flow_tbl_flush(&dp->table); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1320 | goto unlock; |
| 1321 | } |
Andy Zhou | 03f0d91 | 2013-08-07 20:01:00 -0700 | [diff] [blame] | 1322 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1323 | if (ufid_present) |
| 1324 | flow = ovs_flow_tbl_lookup_ufid(&dp->table, &ufid); |
| 1325 | else |
| 1326 | flow = ovs_flow_tbl_lookup_exact(&dp->table, &match); |
Alex Wang | 4a46b24 | 2014-06-30 20:30:29 -0700 | [diff] [blame] | 1327 | if (unlikely(!flow)) { |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1328 | err = -ENOENT; |
| 1329 | goto unlock; |
| 1330 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1331 | |
Pravin B Shelar | b637e49 | 2013-10-04 00:14:23 -0700 | [diff] [blame] | 1332 | ovs_flow_tbl_remove(&dp->table, flow); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1333 | ovs_unlock(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1334 | |
Jarno Rajahalme | aed0677 | 2014-05-05 14:40:13 -0700 | [diff] [blame] | 1335 | reply = ovs_flow_cmd_alloc_info((const struct sw_flow_actions __force *) flow->sf_acts, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1336 | &flow->id, info, false, ufid_flags); |
Jarno Rajahalme | aed0677 | 2014-05-05 14:40:13 -0700 | [diff] [blame] | 1337 | if (likely(reply)) { |
| 1338 | if (likely(!IS_ERR(reply))) { |
| 1339 | rcu_read_lock(); /*To keep RCU checker happy. */ |
| 1340 | err = ovs_flow_cmd_fill_info(flow, ovs_header->dp_ifindex, |
| 1341 | reply, info->snd_portid, |
| 1342 | info->snd_seq, 0, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1343 | OVS_FLOW_CMD_DEL, |
| 1344 | ufid_flags); |
Jarno Rajahalme | aed0677 | 2014-05-05 14:40:13 -0700 | [diff] [blame] | 1345 | rcu_read_unlock(); |
| 1346 | BUG_ON(err < 0); |
| 1347 | |
| 1348 | ovs_notify(&dp_flow_genl_family, reply, info); |
| 1349 | } else { |
| 1350 | netlink_set_err(sock_net(skb->sk)->genl_sock, 0, 0, PTR_ERR(reply)); |
| 1351 | } |
| 1352 | } |
| 1353 | |
| 1354 | ovs_flow_free(flow, true); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1355 | return 0; |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1356 | unlock: |
| 1357 | ovs_unlock(); |
| 1358 | return err; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1359 | } |
| 1360 | |
| 1361 | static int ovs_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 1362 | { |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1363 | struct nlattr *a[__OVS_FLOW_ATTR_MAX]; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1364 | struct ovs_header *ovs_header = genlmsg_data(nlmsg_data(cb->nlh)); |
Pravin B Shelar | b637e49 | 2013-10-04 00:14:23 -0700 | [diff] [blame] | 1365 | struct table_instance *ti; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1366 | struct datapath *dp; |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1367 | u32 ufid_flags; |
| 1368 | int err; |
| 1369 | |
| 1370 | err = genlmsg_parse(cb->nlh, &dp_flow_genl_family, a, |
| 1371 | OVS_FLOW_ATTR_MAX, flow_policy); |
| 1372 | if (err) |
| 1373 | return err; |
| 1374 | ufid_flags = ovs_nla_get_ufid_flags(a[OVS_FLOW_ATTR_UFID_FLAGS]); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1375 | |
Pravin B Shelar | d57170b | 2013-07-30 15:39:39 -0700 | [diff] [blame] | 1376 | rcu_read_lock(); |
Andy Zhou | cc3a5ae | 2014-09-08 13:14:22 -0700 | [diff] [blame] | 1377 | dp = get_dp_rcu(sock_net(skb->sk), ovs_header->dp_ifindex); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1378 | if (!dp) { |
Pravin B Shelar | d57170b | 2013-07-30 15:39:39 -0700 | [diff] [blame] | 1379 | rcu_read_unlock(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1380 | return -ENODEV; |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1381 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1382 | |
Pravin B Shelar | b637e49 | 2013-10-04 00:14:23 -0700 | [diff] [blame] | 1383 | ti = rcu_dereference(dp->table.ti); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1384 | for (;;) { |
| 1385 | struct sw_flow *flow; |
| 1386 | u32 bucket, obj; |
| 1387 | |
| 1388 | bucket = cb->args[0]; |
| 1389 | obj = cb->args[1]; |
Pravin B Shelar | b637e49 | 2013-10-04 00:14:23 -0700 | [diff] [blame] | 1390 | flow = ovs_flow_tbl_dump_next(ti, &bucket, &obj); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1391 | if (!flow) |
| 1392 | break; |
| 1393 | |
Jarno Rajahalme | 0e9796b | 2014-05-05 14:28:07 -0700 | [diff] [blame] | 1394 | if (ovs_flow_cmd_fill_info(flow, ovs_header->dp_ifindex, skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1395 | NETLINK_CB(cb->skb).portid, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1396 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1397 | OVS_FLOW_CMD_NEW, ufid_flags) < 0) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1398 | break; |
| 1399 | |
| 1400 | cb->args[0] = bucket; |
| 1401 | cb->args[1] = obj; |
| 1402 | } |
Pravin B Shelar | d57170b | 2013-07-30 15:39:39 -0700 | [diff] [blame] | 1403 | rcu_read_unlock(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1404 | return skb->len; |
| 1405 | } |
| 1406 | |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 1407 | static const struct nla_policy flow_policy[OVS_FLOW_ATTR_MAX + 1] = { |
| 1408 | [OVS_FLOW_ATTR_KEY] = { .type = NLA_NESTED }, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1409 | [OVS_FLOW_ATTR_MASK] = { .type = NLA_NESTED }, |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 1410 | [OVS_FLOW_ATTR_ACTIONS] = { .type = NLA_NESTED }, |
| 1411 | [OVS_FLOW_ATTR_CLEAR] = { .type = NLA_FLAG }, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1412 | [OVS_FLOW_ATTR_PROBE] = { .type = NLA_FLAG }, |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1413 | [OVS_FLOW_ATTR_UFID] = { .type = NLA_UNSPEC, .len = 1 }, |
| 1414 | [OVS_FLOW_ATTR_UFID_FLAGS] = { .type = NLA_U32 }, |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 1415 | }; |
| 1416 | |
stephen hemminger | 48e48a7 | 2014-07-16 11:25:52 -0700 | [diff] [blame] | 1417 | static const struct genl_ops dp_flow_genl_ops[] = { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1418 | { .cmd = OVS_FLOW_CMD_NEW, |
Tycho Andersen | 4a92602 | 2016-02-05 09:20:52 -0700 | [diff] [blame] | 1419 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1420 | .policy = flow_policy, |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1421 | .doit = ovs_flow_cmd_new |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1422 | }, |
| 1423 | { .cmd = OVS_FLOW_CMD_DEL, |
Tycho Andersen | 4a92602 | 2016-02-05 09:20:52 -0700 | [diff] [blame] | 1424 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1425 | .policy = flow_policy, |
| 1426 | .doit = ovs_flow_cmd_del |
| 1427 | }, |
| 1428 | { .cmd = OVS_FLOW_CMD_GET, |
| 1429 | .flags = 0, /* OK for unprivileged users. */ |
| 1430 | .policy = flow_policy, |
| 1431 | .doit = ovs_flow_cmd_get, |
| 1432 | .dumpit = ovs_flow_cmd_dump |
| 1433 | }, |
| 1434 | { .cmd = OVS_FLOW_CMD_SET, |
Tycho Andersen | 4a92602 | 2016-02-05 09:20:52 -0700 | [diff] [blame] | 1435 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1436 | .policy = flow_policy, |
Jarno Rajahalme | 37bdc87 | 2014-05-05 14:53:51 -0700 | [diff] [blame] | 1437 | .doit = ovs_flow_cmd_set, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1438 | }, |
| 1439 | }; |
| 1440 | |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 1441 | static struct genl_family dp_flow_genl_family = { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1442 | .id = GENL_ID_GENERATE, |
| 1443 | .hdrsize = sizeof(struct ovs_header), |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 1444 | .name = OVS_FLOW_FAMILY, |
| 1445 | .version = OVS_FLOW_VERSION, |
| 1446 | .maxattr = OVS_FLOW_ATTR_MAX, |
Pravin B Shelar | 3a4e0d6 | 2013-04-23 07:48:48 +0000 | [diff] [blame] | 1447 | .netnsok = true, |
| 1448 | .parallel_ops = true, |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 1449 | .ops = dp_flow_genl_ops, |
| 1450 | .n_ops = ARRAY_SIZE(dp_flow_genl_ops), |
| 1451 | .mcgrps = &ovs_dp_flow_multicast_group, |
| 1452 | .n_mcgrps = 1, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1453 | }; |
| 1454 | |
Thomas Graf | c3ff8cf | 2013-03-29 14:46:49 +0100 | [diff] [blame] | 1455 | static size_t ovs_dp_cmd_msg_size(void) |
| 1456 | { |
| 1457 | size_t msgsize = NLMSG_ALIGN(sizeof(struct ovs_header)); |
| 1458 | |
| 1459 | msgsize += nla_total_size(IFNAMSIZ); |
Nicolas Dichtel | 66c7a5e | 2016-04-26 10:06:15 +0200 | [diff] [blame] | 1460 | msgsize += nla_total_size_64bit(sizeof(struct ovs_dp_stats)); |
| 1461 | msgsize += nla_total_size_64bit(sizeof(struct ovs_dp_megaflow_stats)); |
Daniele Di Proietto | 45fb9c3 | 2014-01-23 10:47:35 -0800 | [diff] [blame] | 1462 | msgsize += nla_total_size(sizeof(u32)); /* OVS_DP_ATTR_USER_FEATURES */ |
Thomas Graf | c3ff8cf | 2013-03-29 14:46:49 +0100 | [diff] [blame] | 1463 | |
| 1464 | return msgsize; |
| 1465 | } |
| 1466 | |
Pravin B Shelar | 8ec609d | 2014-11-11 15:55:16 -0800 | [diff] [blame] | 1467 | /* Called with ovs_mutex. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1468 | static int ovs_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1469 | u32 portid, u32 seq, u32 flags, u8 cmd) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1470 | { |
| 1471 | struct ovs_header *ovs_header; |
| 1472 | struct ovs_dp_stats dp_stats; |
Andy Zhou | 1bd7116 | 2013-10-22 10:42:46 -0700 | [diff] [blame] | 1473 | struct ovs_dp_megaflow_stats dp_megaflow_stats; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1474 | int err; |
| 1475 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1476 | ovs_header = genlmsg_put(skb, portid, seq, &dp_datapath_genl_family, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1477 | flags, cmd); |
| 1478 | if (!ovs_header) |
| 1479 | goto error; |
| 1480 | |
| 1481 | ovs_header->dp_ifindex = get_dpifindex(dp); |
| 1482 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1483 | err = nla_put_string(skb, OVS_DP_ATTR_NAME, ovs_dp_name(dp)); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1484 | if (err) |
| 1485 | goto nla_put_failure; |
| 1486 | |
Andy Zhou | 1bd7116 | 2013-10-22 10:42:46 -0700 | [diff] [blame] | 1487 | get_dp_stats(dp, &dp_stats, &dp_megaflow_stats); |
Nicolas Dichtel | 66c7a5e | 2016-04-26 10:06:15 +0200 | [diff] [blame] | 1488 | if (nla_put_64bit(skb, OVS_DP_ATTR_STATS, sizeof(struct ovs_dp_stats), |
| 1489 | &dp_stats, OVS_DP_ATTR_PAD)) |
Andy Zhou | 1bd7116 | 2013-10-22 10:42:46 -0700 | [diff] [blame] | 1490 | goto nla_put_failure; |
| 1491 | |
Nicolas Dichtel | 66c7a5e | 2016-04-26 10:06:15 +0200 | [diff] [blame] | 1492 | if (nla_put_64bit(skb, OVS_DP_ATTR_MEGAFLOW_STATS, |
| 1493 | sizeof(struct ovs_dp_megaflow_stats), |
| 1494 | &dp_megaflow_stats, OVS_DP_ATTR_PAD)) |
David S. Miller | 028d6a6 | 2012-03-29 23:20:48 -0400 | [diff] [blame] | 1495 | goto nla_put_failure; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1496 | |
Thomas Graf | 43d4be9 | 2013-12-13 15:22:18 +0100 | [diff] [blame] | 1497 | if (nla_put_u32(skb, OVS_DP_ATTR_USER_FEATURES, dp->user_features)) |
| 1498 | goto nla_put_failure; |
| 1499 | |
Johannes Berg | 053c095 | 2015-01-16 22:09:00 +0100 | [diff] [blame] | 1500 | genlmsg_end(skb, ovs_header); |
| 1501 | return 0; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1502 | |
| 1503 | nla_put_failure: |
| 1504 | genlmsg_cancel(skb, ovs_header); |
| 1505 | error: |
| 1506 | return -EMSGSIZE; |
| 1507 | } |
| 1508 | |
Florian Westphal | 263ea09 | 2016-02-18 15:03:26 +0100 | [diff] [blame] | 1509 | static struct sk_buff *ovs_dp_cmd_alloc_info(void) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1510 | { |
Florian Westphal | 551ddc0 | 2016-02-18 15:03:25 +0100 | [diff] [blame] | 1511 | return genlmsg_new(ovs_dp_cmd_msg_size(), GFP_KERNEL); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1512 | } |
| 1513 | |
Jarno Rajahalme | bb6f9a7 | 2014-05-05 11:32:17 -0700 | [diff] [blame] | 1514 | /* Called with rcu_read_lock or ovs_mutex. */ |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1515 | static struct datapath *lookup_datapath(struct net *net, |
Thomas Graf | 12eb18f | 2014-11-06 06:58:52 -0800 | [diff] [blame] | 1516 | const struct ovs_header *ovs_header, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1517 | struct nlattr *a[OVS_DP_ATTR_MAX + 1]) |
| 1518 | { |
| 1519 | struct datapath *dp; |
| 1520 | |
| 1521 | if (!a[OVS_DP_ATTR_NAME]) |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1522 | dp = get_dp(net, ovs_header->dp_ifindex); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1523 | else { |
| 1524 | struct vport *vport; |
| 1525 | |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1526 | vport = ovs_vport_locate(net, nla_data(a[OVS_DP_ATTR_NAME])); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1527 | dp = vport && vport->port_no == OVSP_LOCAL ? vport->dp : NULL; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1528 | } |
| 1529 | return dp ? dp : ERR_PTR(-ENODEV); |
| 1530 | } |
| 1531 | |
Thomas Graf | 44da5ae | 2013-12-13 15:22:19 +0100 | [diff] [blame] | 1532 | static void ovs_dp_reset_user_features(struct sk_buff *skb, struct genl_info *info) |
| 1533 | { |
| 1534 | struct datapath *dp; |
| 1535 | |
| 1536 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); |
Jiri Pirko | 3c7eacf | 2014-02-14 11:42:36 +0100 | [diff] [blame] | 1537 | if (IS_ERR(dp)) |
Thomas Graf | 44da5ae | 2013-12-13 15:22:19 +0100 | [diff] [blame] | 1538 | return; |
| 1539 | |
| 1540 | WARN(dp->user_features, "Dropping previously announced user features\n"); |
| 1541 | dp->user_features = 0; |
| 1542 | } |
| 1543 | |
Thomas Graf | 12eb18f | 2014-11-06 06:58:52 -0800 | [diff] [blame] | 1544 | static void ovs_dp_change(struct datapath *dp, struct nlattr *a[]) |
Thomas Graf | 43d4be9 | 2013-12-13 15:22:18 +0100 | [diff] [blame] | 1545 | { |
| 1546 | if (a[OVS_DP_ATTR_USER_FEATURES]) |
| 1547 | dp->user_features = nla_get_u32(a[OVS_DP_ATTR_USER_FEATURES]); |
| 1548 | } |
| 1549 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1550 | static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) |
| 1551 | { |
| 1552 | struct nlattr **a = info->attrs; |
| 1553 | struct vport_parms parms; |
| 1554 | struct sk_buff *reply; |
| 1555 | struct datapath *dp; |
| 1556 | struct vport *vport; |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1557 | struct ovs_net *ovs_net; |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 1558 | int err, i; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1559 | |
| 1560 | err = -EINVAL; |
| 1561 | if (!a[OVS_DP_ATTR_NAME] || !a[OVS_DP_ATTR_UPCALL_PID]) |
| 1562 | goto err; |
| 1563 | |
Florian Westphal | 263ea09 | 2016-02-18 15:03:26 +0100 | [diff] [blame] | 1564 | reply = ovs_dp_cmd_alloc_info(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1565 | if (!reply) |
| 1566 | return -ENOMEM; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1567 | |
| 1568 | err = -ENOMEM; |
| 1569 | dp = kzalloc(sizeof(*dp), GFP_KERNEL); |
| 1570 | if (dp == NULL) |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1571 | goto err_free_reply; |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1572 | |
Eric W. Biederman | efd7ef1 | 2015-03-11 23:04:08 -0500 | [diff] [blame] | 1573 | ovs_dp_set_net(dp, sock_net(skb->sk)); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1574 | |
| 1575 | /* Allocate table. */ |
Pravin B Shelar | b637e49 | 2013-10-04 00:14:23 -0700 | [diff] [blame] | 1576 | err = ovs_flow_tbl_init(&dp->table); |
| 1577 | if (err) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1578 | goto err_free_dp; |
| 1579 | |
WANG Cong | 1c213bd | 2014-02-13 11:46:28 -0800 | [diff] [blame] | 1580 | dp->stats_percpu = netdev_alloc_pcpu_stats(struct dp_stats_percpu); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1581 | if (!dp->stats_percpu) { |
| 1582 | err = -ENOMEM; |
| 1583 | goto err_destroy_table; |
| 1584 | } |
| 1585 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 1586 | dp->ports = kmalloc(DP_VPORT_HASH_BUCKETS * sizeof(struct hlist_head), |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1587 | GFP_KERNEL); |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 1588 | if (!dp->ports) { |
| 1589 | err = -ENOMEM; |
| 1590 | goto err_destroy_percpu; |
| 1591 | } |
| 1592 | |
| 1593 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) |
| 1594 | INIT_HLIST_HEAD(&dp->ports[i]); |
| 1595 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1596 | /* Set up our datapath device. */ |
| 1597 | parms.name = nla_data(a[OVS_DP_ATTR_NAME]); |
| 1598 | parms.type = OVS_VPORT_TYPE_INTERNAL; |
| 1599 | parms.options = NULL; |
| 1600 | parms.dp = dp; |
| 1601 | parms.port_no = OVSP_LOCAL; |
Alex Wang | 5cd667b | 2014-07-17 15:14:13 -0700 | [diff] [blame] | 1602 | parms.upcall_portids = a[OVS_DP_ATTR_UPCALL_PID]; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1603 | |
Thomas Graf | 43d4be9 | 2013-12-13 15:22:18 +0100 | [diff] [blame] | 1604 | ovs_dp_change(dp, a); |
| 1605 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1606 | /* So far only local changes have been made, now need the lock. */ |
| 1607 | ovs_lock(); |
| 1608 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1609 | vport = new_vport(&parms); |
| 1610 | if (IS_ERR(vport)) { |
| 1611 | err = PTR_ERR(vport); |
| 1612 | if (err == -EBUSY) |
| 1613 | err = -EEXIST; |
| 1614 | |
Thomas Graf | 44da5ae | 2013-12-13 15:22:19 +0100 | [diff] [blame] | 1615 | if (err == -EEXIST) { |
| 1616 | /* An outdated user space instance that does not understand |
| 1617 | * the concept of user_features has attempted to create a new |
| 1618 | * datapath and is likely to reuse it. Drop all user features. |
| 1619 | */ |
| 1620 | if (info->genlhdr->version < OVS_DP_VER_FEATURES) |
| 1621 | ovs_dp_reset_user_features(skb, info); |
| 1622 | } |
| 1623 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 1624 | goto err_destroy_ports_array; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1625 | } |
| 1626 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1627 | err = ovs_dp_cmd_fill_info(dp, reply, info->snd_portid, |
| 1628 | info->snd_seq, 0, OVS_DP_CMD_NEW); |
| 1629 | BUG_ON(err < 0); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1630 | |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1631 | ovs_net = net_generic(ovs_dp_get_net(dp), ovs_net_id); |
Pravin B Shelar | 59a35d6 | 2013-07-30 15:42:19 -0700 | [diff] [blame] | 1632 | list_add_tail_rcu(&dp->list_node, &ovs_net->dps); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1633 | |
| 1634 | ovs_unlock(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1635 | |
Johannes Berg | 2a94fe4 | 2013-11-19 15:19:39 +0100 | [diff] [blame] | 1636 | ovs_notify(&dp_datapath_genl_family, reply, info); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1637 | return 0; |
| 1638 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 1639 | err_destroy_ports_array: |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1640 | ovs_unlock(); |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 1641 | kfree(dp->ports); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1642 | err_destroy_percpu: |
| 1643 | free_percpu(dp->stats_percpu); |
| 1644 | err_destroy_table: |
Pravin B Shelar | 9b996e5 | 2014-05-06 18:41:20 -0700 | [diff] [blame] | 1645 | ovs_flow_tbl_destroy(&dp->table); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1646 | err_free_dp: |
| 1647 | kfree(dp); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1648 | err_free_reply: |
| 1649 | kfree_skb(reply); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1650 | err: |
| 1651 | return err; |
| 1652 | } |
| 1653 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1654 | /* Called with ovs_mutex. */ |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1655 | static void __dp_destroy(struct datapath *dp) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1656 | { |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 1657 | int i; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1658 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 1659 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) { |
| 1660 | struct vport *vport; |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 1661 | struct hlist_node *n; |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 1662 | |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 1663 | hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 1664 | if (vport->port_no != OVSP_LOCAL) |
| 1665 | ovs_dp_detach_port(vport); |
| 1666 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1667 | |
Pravin B Shelar | 59a35d6 | 2013-07-30 15:42:19 -0700 | [diff] [blame] | 1668 | list_del_rcu(&dp->list_node); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1669 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1670 | /* OVSP_LOCAL is datapath internal port. We need to make sure that |
Andy Zhou | e80857c | 2014-01-21 09:31:04 -0800 | [diff] [blame] | 1671 | * all ports in datapath are destroyed first before freeing datapath. |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1672 | */ |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1673 | ovs_dp_detach_port(ovs_vport_ovsl(dp, OVSP_LOCAL)); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1674 | |
Andy Zhou | e80857c | 2014-01-21 09:31:04 -0800 | [diff] [blame] | 1675 | /* RCU destroy the flow table */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1676 | call_rcu(&dp->rcu, destroy_dp_rcu); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1677 | } |
| 1678 | |
| 1679 | static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) |
| 1680 | { |
| 1681 | struct sk_buff *reply; |
| 1682 | struct datapath *dp; |
| 1683 | int err; |
| 1684 | |
Florian Westphal | 263ea09 | 2016-02-18 15:03:26 +0100 | [diff] [blame] | 1685 | reply = ovs_dp_cmd_alloc_info(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1686 | if (!reply) |
| 1687 | return -ENOMEM; |
| 1688 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1689 | ovs_lock(); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1690 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); |
| 1691 | err = PTR_ERR(dp); |
| 1692 | if (IS_ERR(dp)) |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1693 | goto err_unlock_free; |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1694 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1695 | err = ovs_dp_cmd_fill_info(dp, reply, info->snd_portid, |
| 1696 | info->snd_seq, 0, OVS_DP_CMD_DEL); |
| 1697 | BUG_ON(err < 0); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1698 | |
| 1699 | __dp_destroy(dp); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1700 | ovs_unlock(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1701 | |
Johannes Berg | 2a94fe4 | 2013-11-19 15:19:39 +0100 | [diff] [blame] | 1702 | ovs_notify(&dp_datapath_genl_family, reply, info); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1703 | |
| 1704 | return 0; |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1705 | |
| 1706 | err_unlock_free: |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1707 | ovs_unlock(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1708 | kfree_skb(reply); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1709 | return err; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1710 | } |
| 1711 | |
| 1712 | static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info) |
| 1713 | { |
| 1714 | struct sk_buff *reply; |
| 1715 | struct datapath *dp; |
| 1716 | int err; |
| 1717 | |
Florian Westphal | 263ea09 | 2016-02-18 15:03:26 +0100 | [diff] [blame] | 1718 | reply = ovs_dp_cmd_alloc_info(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1719 | if (!reply) |
| 1720 | return -ENOMEM; |
| 1721 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1722 | ovs_lock(); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1723 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1724 | err = PTR_ERR(dp); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1725 | if (IS_ERR(dp)) |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1726 | goto err_unlock_free; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1727 | |
Thomas Graf | 43d4be9 | 2013-12-13 15:22:18 +0100 | [diff] [blame] | 1728 | ovs_dp_change(dp, info->attrs); |
| 1729 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1730 | err = ovs_dp_cmd_fill_info(dp, reply, info->snd_portid, |
| 1731 | info->snd_seq, 0, OVS_DP_CMD_NEW); |
| 1732 | BUG_ON(err < 0); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1733 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1734 | ovs_unlock(); |
Johannes Berg | 2a94fe4 | 2013-11-19 15:19:39 +0100 | [diff] [blame] | 1735 | ovs_notify(&dp_datapath_genl_family, reply, info); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1736 | |
| 1737 | return 0; |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1738 | |
| 1739 | err_unlock_free: |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1740 | ovs_unlock(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1741 | kfree_skb(reply); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1742 | return err; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1743 | } |
| 1744 | |
| 1745 | static int ovs_dp_cmd_get(struct sk_buff *skb, struct genl_info *info) |
| 1746 | { |
| 1747 | struct sk_buff *reply; |
| 1748 | struct datapath *dp; |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1749 | int err; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1750 | |
Florian Westphal | 263ea09 | 2016-02-18 15:03:26 +0100 | [diff] [blame] | 1751 | reply = ovs_dp_cmd_alloc_info(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1752 | if (!reply) |
| 1753 | return -ENOMEM; |
| 1754 | |
Pravin B Shelar | 8ec609d | 2014-11-11 15:55:16 -0800 | [diff] [blame] | 1755 | ovs_lock(); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1756 | dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1757 | if (IS_ERR(dp)) { |
| 1758 | err = PTR_ERR(dp); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1759 | goto err_unlock_free; |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1760 | } |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1761 | err = ovs_dp_cmd_fill_info(dp, reply, info->snd_portid, |
| 1762 | info->snd_seq, 0, OVS_DP_CMD_NEW); |
| 1763 | BUG_ON(err < 0); |
Pravin B Shelar | 8ec609d | 2014-11-11 15:55:16 -0800 | [diff] [blame] | 1764 | ovs_unlock(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1765 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1766 | return genlmsg_reply(reply, info); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1767 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1768 | err_unlock_free: |
Pravin B Shelar | 8ec609d | 2014-11-11 15:55:16 -0800 | [diff] [blame] | 1769 | ovs_unlock(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1770 | kfree_skb(reply); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1771 | return err; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1772 | } |
| 1773 | |
| 1774 | static int ovs_dp_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 1775 | { |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1776 | struct ovs_net *ovs_net = net_generic(sock_net(skb->sk), ovs_net_id); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1777 | struct datapath *dp; |
| 1778 | int skip = cb->args[0]; |
| 1779 | int i = 0; |
| 1780 | |
Pravin B Shelar | 8ec609d | 2014-11-11 15:55:16 -0800 | [diff] [blame] | 1781 | ovs_lock(); |
| 1782 | list_for_each_entry(dp, &ovs_net->dps, list_node) { |
Ben Pfaff | 77676fd | 2012-01-17 13:33:39 +0000 | [diff] [blame] | 1783 | if (i >= skip && |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1784 | ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).portid, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1785 | cb->nlh->nlmsg_seq, NLM_F_MULTI, |
| 1786 | OVS_DP_CMD_NEW) < 0) |
| 1787 | break; |
| 1788 | i++; |
| 1789 | } |
Pravin B Shelar | 8ec609d | 2014-11-11 15:55:16 -0800 | [diff] [blame] | 1790 | ovs_unlock(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1791 | |
| 1792 | cb->args[0] = i; |
| 1793 | |
| 1794 | return skb->len; |
| 1795 | } |
| 1796 | |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 1797 | static const struct nla_policy datapath_policy[OVS_DP_ATTR_MAX + 1] = { |
| 1798 | [OVS_DP_ATTR_NAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, |
| 1799 | [OVS_DP_ATTR_UPCALL_PID] = { .type = NLA_U32 }, |
| 1800 | [OVS_DP_ATTR_USER_FEATURES] = { .type = NLA_U32 }, |
| 1801 | }; |
| 1802 | |
stephen hemminger | 48e48a7 | 2014-07-16 11:25:52 -0700 | [diff] [blame] | 1803 | static const struct genl_ops dp_datapath_genl_ops[] = { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1804 | { .cmd = OVS_DP_CMD_NEW, |
Tycho Andersen | 4a92602 | 2016-02-05 09:20:52 -0700 | [diff] [blame] | 1805 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1806 | .policy = datapath_policy, |
| 1807 | .doit = ovs_dp_cmd_new |
| 1808 | }, |
| 1809 | { .cmd = OVS_DP_CMD_DEL, |
Tycho Andersen | 4a92602 | 2016-02-05 09:20:52 -0700 | [diff] [blame] | 1810 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1811 | .policy = datapath_policy, |
| 1812 | .doit = ovs_dp_cmd_del |
| 1813 | }, |
| 1814 | { .cmd = OVS_DP_CMD_GET, |
| 1815 | .flags = 0, /* OK for unprivileged users. */ |
| 1816 | .policy = datapath_policy, |
| 1817 | .doit = ovs_dp_cmd_get, |
| 1818 | .dumpit = ovs_dp_cmd_dump |
| 1819 | }, |
| 1820 | { .cmd = OVS_DP_CMD_SET, |
Tycho Andersen | 4a92602 | 2016-02-05 09:20:52 -0700 | [diff] [blame] | 1821 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1822 | .policy = datapath_policy, |
| 1823 | .doit = ovs_dp_cmd_set, |
| 1824 | }, |
| 1825 | }; |
| 1826 | |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 1827 | static struct genl_family dp_datapath_genl_family = { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1828 | .id = GENL_ID_GENERATE, |
| 1829 | .hdrsize = sizeof(struct ovs_header), |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 1830 | .name = OVS_DATAPATH_FAMILY, |
| 1831 | .version = OVS_DATAPATH_VERSION, |
| 1832 | .maxattr = OVS_DP_ATTR_MAX, |
Pravin B Shelar | 3a4e0d6 | 2013-04-23 07:48:48 +0000 | [diff] [blame] | 1833 | .netnsok = true, |
| 1834 | .parallel_ops = true, |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 1835 | .ops = dp_datapath_genl_ops, |
| 1836 | .n_ops = ARRAY_SIZE(dp_datapath_genl_ops), |
| 1837 | .mcgrps = &ovs_dp_datapath_multicast_group, |
| 1838 | .n_mcgrps = 1, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1839 | }; |
| 1840 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1841 | /* Called with ovs_mutex or RCU read lock. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1842 | static int ovs_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1843 | u32 portid, u32 seq, u32 flags, u8 cmd) |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1844 | { |
| 1845 | struct ovs_header *ovs_header; |
| 1846 | struct ovs_vport_stats vport_stats; |
| 1847 | int err; |
| 1848 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1849 | ovs_header = genlmsg_put(skb, portid, seq, &dp_vport_genl_family, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1850 | flags, cmd); |
| 1851 | if (!ovs_header) |
| 1852 | return -EMSGSIZE; |
| 1853 | |
| 1854 | ovs_header->dp_ifindex = get_dpifindex(vport->dp); |
| 1855 | |
David S. Miller | 028d6a6 | 2012-03-29 23:20:48 -0400 | [diff] [blame] | 1856 | if (nla_put_u32(skb, OVS_VPORT_ATTR_PORT_NO, vport->port_no) || |
| 1857 | nla_put_u32(skb, OVS_VPORT_ATTR_TYPE, vport->ops->type) || |
Alex Wang | 5cd667b | 2014-07-17 15:14:13 -0700 | [diff] [blame] | 1858 | nla_put_string(skb, OVS_VPORT_ATTR_NAME, |
Thomas Graf | c9db965 | 2015-07-21 10:44:05 +0200 | [diff] [blame] | 1859 | ovs_vport_name(vport))) |
David S. Miller | 028d6a6 | 2012-03-29 23:20:48 -0400 | [diff] [blame] | 1860 | goto nla_put_failure; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1861 | |
| 1862 | ovs_vport_get_stats(vport, &vport_stats); |
Nicolas Dichtel | 66c7a5e | 2016-04-26 10:06:15 +0200 | [diff] [blame] | 1863 | if (nla_put_64bit(skb, OVS_VPORT_ATTR_STATS, |
| 1864 | sizeof(struct ovs_vport_stats), &vport_stats, |
| 1865 | OVS_VPORT_ATTR_PAD)) |
David S. Miller | 028d6a6 | 2012-03-29 23:20:48 -0400 | [diff] [blame] | 1866 | goto nla_put_failure; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1867 | |
Alex Wang | 5cd667b | 2014-07-17 15:14:13 -0700 | [diff] [blame] | 1868 | if (ovs_vport_get_upcall_portids(vport, skb)) |
| 1869 | goto nla_put_failure; |
| 1870 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1871 | err = ovs_vport_get_options(vport, skb); |
| 1872 | if (err == -EMSGSIZE) |
| 1873 | goto error; |
| 1874 | |
Johannes Berg | 053c095 | 2015-01-16 22:09:00 +0100 | [diff] [blame] | 1875 | genlmsg_end(skb, ovs_header); |
| 1876 | return 0; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1877 | |
| 1878 | nla_put_failure: |
| 1879 | err = -EMSGSIZE; |
| 1880 | error: |
| 1881 | genlmsg_cancel(skb, ovs_header); |
| 1882 | return err; |
| 1883 | } |
| 1884 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1885 | static struct sk_buff *ovs_vport_cmd_alloc_info(void) |
| 1886 | { |
| 1887 | return nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1888 | } |
| 1889 | |
| 1890 | /* Called with ovs_mutex, only via ovs_dp_notify_wq(). */ |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1891 | struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, u32 portid, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1892 | u32 seq, u8 cmd) |
| 1893 | { |
| 1894 | struct sk_buff *skb; |
| 1895 | int retval; |
| 1896 | |
| 1897 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
| 1898 | if (!skb) |
| 1899 | return ERR_PTR(-ENOMEM); |
| 1900 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 1901 | retval = ovs_vport_cmd_fill_info(vport, skb, portid, seq, 0, cmd); |
Jesse Gross | a934151 | 2013-03-26 15:48:38 -0700 | [diff] [blame] | 1902 | BUG_ON(retval < 0); |
| 1903 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1904 | return skb; |
| 1905 | } |
| 1906 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1907 | /* Called with ovs_mutex or RCU read lock. */ |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1908 | static struct vport *lookup_vport(struct net *net, |
Thomas Graf | 12eb18f | 2014-11-06 06:58:52 -0800 | [diff] [blame] | 1909 | const struct ovs_header *ovs_header, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1910 | struct nlattr *a[OVS_VPORT_ATTR_MAX + 1]) |
| 1911 | { |
| 1912 | struct datapath *dp; |
| 1913 | struct vport *vport; |
| 1914 | |
| 1915 | if (a[OVS_VPORT_ATTR_NAME]) { |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1916 | vport = ovs_vport_locate(net, nla_data(a[OVS_VPORT_ATTR_NAME])); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1917 | if (!vport) |
| 1918 | return ERR_PTR(-ENODEV); |
Ben Pfaff | 651a68e | 2012-03-06 15:04:04 -0800 | [diff] [blame] | 1919 | if (ovs_header->dp_ifindex && |
| 1920 | ovs_header->dp_ifindex != get_dpifindex(vport->dp)) |
| 1921 | return ERR_PTR(-ENODEV); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1922 | return vport; |
| 1923 | } else if (a[OVS_VPORT_ATTR_PORT_NO]) { |
| 1924 | u32 port_no = nla_get_u32(a[OVS_VPORT_ATTR_PORT_NO]); |
| 1925 | |
| 1926 | if (port_no >= DP_MAX_PORTS) |
| 1927 | return ERR_PTR(-EFBIG); |
| 1928 | |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1929 | dp = get_dp(net, ovs_header->dp_ifindex); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1930 | if (!dp) |
| 1931 | return ERR_PTR(-ENODEV); |
| 1932 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1933 | vport = ovs_vport_ovsl_rcu(dp, port_no); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1934 | if (!vport) |
Jarno Rajahalme | 14408db | 2013-01-09 14:27:35 -0800 | [diff] [blame] | 1935 | return ERR_PTR(-ENODEV); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1936 | return vport; |
| 1937 | } else |
| 1938 | return ERR_PTR(-EINVAL); |
| 1939 | } |
| 1940 | |
Paolo Abeni | 3a927bc | 2016-02-26 10:45:39 +0100 | [diff] [blame] | 1941 | /* Called with ovs_mutex */ |
| 1942 | static void update_headroom(struct datapath *dp) |
| 1943 | { |
| 1944 | unsigned dev_headroom, max_headroom = 0; |
| 1945 | struct net_device *dev; |
| 1946 | struct vport *vport; |
| 1947 | int i; |
| 1948 | |
| 1949 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) { |
| 1950 | hlist_for_each_entry_rcu(vport, &dp->ports[i], dp_hash_node) { |
| 1951 | dev = vport->dev; |
| 1952 | dev_headroom = netdev_get_fwd_headroom(dev); |
| 1953 | if (dev_headroom > max_headroom) |
| 1954 | max_headroom = dev_headroom; |
| 1955 | } |
| 1956 | } |
| 1957 | |
| 1958 | dp->max_headroom = max_headroom; |
| 1959 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) |
| 1960 | hlist_for_each_entry_rcu(vport, &dp->ports[i], dp_hash_node) |
| 1961 | netdev_set_rx_headroom(vport->dev, max_headroom); |
| 1962 | } |
| 1963 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1964 | static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info) |
| 1965 | { |
| 1966 | struct nlattr **a = info->attrs; |
| 1967 | struct ovs_header *ovs_header = info->userhdr; |
| 1968 | struct vport_parms parms; |
| 1969 | struct sk_buff *reply; |
| 1970 | struct vport *vport; |
| 1971 | struct datapath *dp; |
| 1972 | u32 port_no; |
| 1973 | int err; |
| 1974 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1975 | if (!a[OVS_VPORT_ATTR_NAME] || !a[OVS_VPORT_ATTR_TYPE] || |
| 1976 | !a[OVS_VPORT_ATTR_UPCALL_PID]) |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1977 | return -EINVAL; |
| 1978 | |
| 1979 | port_no = a[OVS_VPORT_ATTR_PORT_NO] |
| 1980 | ? nla_get_u32(a[OVS_VPORT_ATTR_PORT_NO]) : 0; |
| 1981 | if (port_no >= DP_MAX_PORTS) |
| 1982 | return -EFBIG; |
| 1983 | |
| 1984 | reply = ovs_vport_cmd_alloc_info(); |
| 1985 | if (!reply) |
| 1986 | return -ENOMEM; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1987 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1988 | ovs_lock(); |
Thomas Graf | 62b9c8d | 2014-10-22 17:29:06 +0200 | [diff] [blame] | 1989 | restart: |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 1990 | dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1991 | err = -ENODEV; |
| 1992 | if (!dp) |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1993 | goto exit_unlock_free; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1994 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1995 | if (port_no) { |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 1996 | vport = ovs_vport_ovsl(dp, port_no); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 1997 | err = -EBUSY; |
| 1998 | if (vport) |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 1999 | goto exit_unlock_free; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2000 | } else { |
| 2001 | for (port_no = 1; ; port_no++) { |
| 2002 | if (port_no >= DP_MAX_PORTS) { |
| 2003 | err = -EFBIG; |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2004 | goto exit_unlock_free; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2005 | } |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2006 | vport = ovs_vport_ovsl(dp, port_no); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2007 | if (!vport) |
| 2008 | break; |
| 2009 | } |
| 2010 | } |
| 2011 | |
| 2012 | parms.name = nla_data(a[OVS_VPORT_ATTR_NAME]); |
| 2013 | parms.type = nla_get_u32(a[OVS_VPORT_ATTR_TYPE]); |
| 2014 | parms.options = a[OVS_VPORT_ATTR_OPTIONS]; |
| 2015 | parms.dp = dp; |
| 2016 | parms.port_no = port_no; |
Alex Wang | 5cd667b | 2014-07-17 15:14:13 -0700 | [diff] [blame] | 2017 | parms.upcall_portids = a[OVS_VPORT_ATTR_UPCALL_PID]; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2018 | |
| 2019 | vport = new_vport(&parms); |
| 2020 | err = PTR_ERR(vport); |
Thomas Graf | 62b9c8d | 2014-10-22 17:29:06 +0200 | [diff] [blame] | 2021 | if (IS_ERR(vport)) { |
| 2022 | if (err == -EAGAIN) |
| 2023 | goto restart; |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2024 | goto exit_unlock_free; |
Thomas Graf | 62b9c8d | 2014-10-22 17:29:06 +0200 | [diff] [blame] | 2025 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2026 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2027 | err = ovs_vport_cmd_fill_info(vport, reply, info->snd_portid, |
| 2028 | info->snd_seq, 0, OVS_VPORT_CMD_NEW); |
Paolo Abeni | 3a927bc | 2016-02-26 10:45:39 +0100 | [diff] [blame] | 2029 | |
| 2030 | if (netdev_get_fwd_headroom(vport->dev) > dp->max_headroom) |
| 2031 | update_headroom(dp); |
| 2032 | else |
| 2033 | netdev_set_rx_headroom(vport->dev, dp->max_headroom); |
| 2034 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2035 | BUG_ON(err < 0); |
| 2036 | ovs_unlock(); |
Thomas Graf | ed66118 | 2013-03-29 14:46:50 +0100 | [diff] [blame] | 2037 | |
Johannes Berg | 2a94fe4 | 2013-11-19 15:19:39 +0100 | [diff] [blame] | 2038 | ovs_notify(&dp_vport_genl_family, reply, info); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2039 | return 0; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2040 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2041 | exit_unlock_free: |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2042 | ovs_unlock(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2043 | kfree_skb(reply); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2044 | return err; |
| 2045 | } |
| 2046 | |
| 2047 | static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info) |
| 2048 | { |
| 2049 | struct nlattr **a = info->attrs; |
| 2050 | struct sk_buff *reply; |
| 2051 | struct vport *vport; |
| 2052 | int err; |
| 2053 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2054 | reply = ovs_vport_cmd_alloc_info(); |
| 2055 | if (!reply) |
| 2056 | return -ENOMEM; |
| 2057 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2058 | ovs_lock(); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2059 | vport = lookup_vport(sock_net(skb->sk), info->userhdr, a); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2060 | err = PTR_ERR(vport); |
| 2061 | if (IS_ERR(vport)) |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2062 | goto exit_unlock_free; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2063 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2064 | if (a[OVS_VPORT_ATTR_TYPE] && |
Jesse Gross | f44f340 | 2013-05-13 08:15:26 -0700 | [diff] [blame] | 2065 | nla_get_u32(a[OVS_VPORT_ATTR_TYPE]) != vport->ops->type) { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2066 | err = -EINVAL; |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2067 | goto exit_unlock_free; |
Jesse Gross | a934151 | 2013-03-26 15:48:38 -0700 | [diff] [blame] | 2068 | } |
| 2069 | |
Jesse Gross | f44f340 | 2013-05-13 08:15:26 -0700 | [diff] [blame] | 2070 | if (a[OVS_VPORT_ATTR_OPTIONS]) { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2071 | err = ovs_vport_set_options(vport, a[OVS_VPORT_ATTR_OPTIONS]); |
Jesse Gross | f44f340 | 2013-05-13 08:15:26 -0700 | [diff] [blame] | 2072 | if (err) |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2073 | goto exit_unlock_free; |
Jesse Gross | f44f340 | 2013-05-13 08:15:26 -0700 | [diff] [blame] | 2074 | } |
Jesse Gross | a934151 | 2013-03-26 15:48:38 -0700 | [diff] [blame] | 2075 | |
Alex Wang | 5cd667b | 2014-07-17 15:14:13 -0700 | [diff] [blame] | 2076 | |
| 2077 | if (a[OVS_VPORT_ATTR_UPCALL_PID]) { |
| 2078 | struct nlattr *ids = a[OVS_VPORT_ATTR_UPCALL_PID]; |
| 2079 | |
| 2080 | err = ovs_vport_set_upcall_portids(vport, ids); |
| 2081 | if (err) |
| 2082 | goto exit_unlock_free; |
| 2083 | } |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2084 | |
Jesse Gross | a934151 | 2013-03-26 15:48:38 -0700 | [diff] [blame] | 2085 | err = ovs_vport_cmd_fill_info(vport, reply, info->snd_portid, |
| 2086 | info->snd_seq, 0, OVS_VPORT_CMD_NEW); |
| 2087 | BUG_ON(err < 0); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2088 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2089 | ovs_unlock(); |
Johannes Berg | 2a94fe4 | 2013-11-19 15:19:39 +0100 | [diff] [blame] | 2090 | ovs_notify(&dp_vport_genl_family, reply, info); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2091 | return 0; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2092 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2093 | exit_unlock_free: |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2094 | ovs_unlock(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2095 | kfree_skb(reply); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2096 | return err; |
| 2097 | } |
| 2098 | |
| 2099 | static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info) |
| 2100 | { |
Paolo Abeni | 3a927bc | 2016-02-26 10:45:39 +0100 | [diff] [blame] | 2101 | bool must_update_headroom = false; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2102 | struct nlattr **a = info->attrs; |
| 2103 | struct sk_buff *reply; |
Paolo Abeni | 3a927bc | 2016-02-26 10:45:39 +0100 | [diff] [blame] | 2104 | struct datapath *dp; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2105 | struct vport *vport; |
| 2106 | int err; |
| 2107 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2108 | reply = ovs_vport_cmd_alloc_info(); |
| 2109 | if (!reply) |
| 2110 | return -ENOMEM; |
| 2111 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2112 | ovs_lock(); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2113 | vport = lookup_vport(sock_net(skb->sk), info->userhdr, a); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2114 | err = PTR_ERR(vport); |
| 2115 | if (IS_ERR(vport)) |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2116 | goto exit_unlock_free; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2117 | |
| 2118 | if (vport->port_no == OVSP_LOCAL) { |
| 2119 | err = -EINVAL; |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2120 | goto exit_unlock_free; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2121 | } |
| 2122 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2123 | err = ovs_vport_cmd_fill_info(vport, reply, info->snd_portid, |
| 2124 | info->snd_seq, 0, OVS_VPORT_CMD_DEL); |
| 2125 | BUG_ON(err < 0); |
Paolo Abeni | 3a927bc | 2016-02-26 10:45:39 +0100 | [diff] [blame] | 2126 | |
| 2127 | /* the vport deletion may trigger dp headroom update */ |
| 2128 | dp = vport->dp; |
| 2129 | if (netdev_get_fwd_headroom(vport->dev) == dp->max_headroom) |
| 2130 | must_update_headroom = true; |
| 2131 | netdev_reset_rx_headroom(vport->dev); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2132 | ovs_dp_detach_port(vport); |
Paolo Abeni | 3a927bc | 2016-02-26 10:45:39 +0100 | [diff] [blame] | 2133 | |
| 2134 | if (must_update_headroom) |
| 2135 | update_headroom(dp); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2136 | ovs_unlock(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2137 | |
Johannes Berg | 2a94fe4 | 2013-11-19 15:19:39 +0100 | [diff] [blame] | 2138 | ovs_notify(&dp_vport_genl_family, reply, info); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2139 | return 0; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2140 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2141 | exit_unlock_free: |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2142 | ovs_unlock(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2143 | kfree_skb(reply); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2144 | return err; |
| 2145 | } |
| 2146 | |
| 2147 | static int ovs_vport_cmd_get(struct sk_buff *skb, struct genl_info *info) |
| 2148 | { |
| 2149 | struct nlattr **a = info->attrs; |
| 2150 | struct ovs_header *ovs_header = info->userhdr; |
| 2151 | struct sk_buff *reply; |
| 2152 | struct vport *vport; |
| 2153 | int err; |
| 2154 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2155 | reply = ovs_vport_cmd_alloc_info(); |
| 2156 | if (!reply) |
| 2157 | return -ENOMEM; |
| 2158 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2159 | rcu_read_lock(); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2160 | vport = lookup_vport(sock_net(skb->sk), ovs_header, a); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2161 | err = PTR_ERR(vport); |
| 2162 | if (IS_ERR(vport)) |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2163 | goto exit_unlock_free; |
| 2164 | err = ovs_vport_cmd_fill_info(vport, reply, info->snd_portid, |
| 2165 | info->snd_seq, 0, OVS_VPORT_CMD_NEW); |
| 2166 | BUG_ON(err < 0); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2167 | rcu_read_unlock(); |
| 2168 | |
| 2169 | return genlmsg_reply(reply, info); |
| 2170 | |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2171 | exit_unlock_free: |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2172 | rcu_read_unlock(); |
Jarno Rajahalme | 6093ae9 | 2014-05-05 14:13:32 -0700 | [diff] [blame] | 2173 | kfree_skb(reply); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2174 | return err; |
| 2175 | } |
| 2176 | |
| 2177 | static int ovs_vport_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 2178 | { |
| 2179 | struct ovs_header *ovs_header = genlmsg_data(nlmsg_data(cb->nlh)); |
| 2180 | struct datapath *dp; |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 2181 | int bucket = cb->args[0], skip = cb->args[1]; |
| 2182 | int i, j = 0; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2183 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2184 | rcu_read_lock(); |
Andy Zhou | cc3a5ae | 2014-09-08 13:14:22 -0700 | [diff] [blame] | 2185 | dp = get_dp_rcu(sock_net(skb->sk), ovs_header->dp_ifindex); |
Jarno Rajahalme | 42ee19e | 2014-02-15 17:42:29 -0800 | [diff] [blame] | 2186 | if (!dp) { |
| 2187 | rcu_read_unlock(); |
| 2188 | return -ENODEV; |
| 2189 | } |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 2190 | for (i = bucket; i < DP_VPORT_HASH_BUCKETS; i++) { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2191 | struct vport *vport; |
| 2192 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 2193 | j = 0; |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 2194 | hlist_for_each_entry_rcu(vport, &dp->ports[i], dp_hash_node) { |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 2195 | if (j >= skip && |
| 2196 | ovs_vport_cmd_fill_info(vport, skb, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 2197 | NETLINK_CB(cb->skb).portid, |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 2198 | cb->nlh->nlmsg_seq, |
| 2199 | NLM_F_MULTI, |
| 2200 | OVS_VPORT_CMD_NEW) < 0) |
| 2201 | goto out; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2202 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 2203 | j++; |
| 2204 | } |
| 2205 | skip = 0; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2206 | } |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 2207 | out: |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2208 | rcu_read_unlock(); |
| 2209 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 2210 | cb->args[0] = i; |
| 2211 | cb->args[1] = j; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2212 | |
Pravin B Shelar | 15eac2a | 2012-08-23 12:40:54 -0700 | [diff] [blame] | 2213 | return skb->len; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2214 | } |
| 2215 | |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 2216 | static const struct nla_policy vport_policy[OVS_VPORT_ATTR_MAX + 1] = { |
| 2217 | [OVS_VPORT_ATTR_NAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, |
| 2218 | [OVS_VPORT_ATTR_STATS] = { .len = sizeof(struct ovs_vport_stats) }, |
| 2219 | [OVS_VPORT_ATTR_PORT_NO] = { .type = NLA_U32 }, |
| 2220 | [OVS_VPORT_ATTR_TYPE] = { .type = NLA_U32 }, |
| 2221 | [OVS_VPORT_ATTR_UPCALL_PID] = { .type = NLA_U32 }, |
| 2222 | [OVS_VPORT_ATTR_OPTIONS] = { .type = NLA_NESTED }, |
| 2223 | }; |
| 2224 | |
stephen hemminger | 48e48a7 | 2014-07-16 11:25:52 -0700 | [diff] [blame] | 2225 | static const struct genl_ops dp_vport_genl_ops[] = { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2226 | { .cmd = OVS_VPORT_CMD_NEW, |
Tycho Andersen | 4a92602 | 2016-02-05 09:20:52 -0700 | [diff] [blame] | 2227 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2228 | .policy = vport_policy, |
| 2229 | .doit = ovs_vport_cmd_new |
| 2230 | }, |
| 2231 | { .cmd = OVS_VPORT_CMD_DEL, |
Tycho Andersen | 4a92602 | 2016-02-05 09:20:52 -0700 | [diff] [blame] | 2232 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2233 | .policy = vport_policy, |
| 2234 | .doit = ovs_vport_cmd_del |
| 2235 | }, |
| 2236 | { .cmd = OVS_VPORT_CMD_GET, |
| 2237 | .flags = 0, /* OK for unprivileged users. */ |
| 2238 | .policy = vport_policy, |
| 2239 | .doit = ovs_vport_cmd_get, |
| 2240 | .dumpit = ovs_vport_cmd_dump |
| 2241 | }, |
| 2242 | { .cmd = OVS_VPORT_CMD_SET, |
Tycho Andersen | 4a92602 | 2016-02-05 09:20:52 -0700 | [diff] [blame] | 2243 | .flags = GENL_UNS_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2244 | .policy = vport_policy, |
| 2245 | .doit = ovs_vport_cmd_set, |
| 2246 | }, |
| 2247 | }; |
| 2248 | |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 2249 | struct genl_family dp_vport_genl_family = { |
| 2250 | .id = GENL_ID_GENERATE, |
| 2251 | .hdrsize = sizeof(struct ovs_header), |
| 2252 | .name = OVS_VPORT_FAMILY, |
| 2253 | .version = OVS_VPORT_VERSION, |
| 2254 | .maxattr = OVS_VPORT_ATTR_MAX, |
| 2255 | .netnsok = true, |
| 2256 | .parallel_ops = true, |
| 2257 | .ops = dp_vport_genl_ops, |
| 2258 | .n_ops = ARRAY_SIZE(dp_vport_genl_ops), |
| 2259 | .mcgrps = &ovs_dp_vport_multicast_group, |
| 2260 | .n_mcgrps = 1, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2261 | }; |
| 2262 | |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 2263 | static struct genl_family * const dp_genl_families[] = { |
| 2264 | &dp_datapath_genl_family, |
| 2265 | &dp_vport_genl_family, |
| 2266 | &dp_flow_genl_family, |
| 2267 | &dp_packet_genl_family, |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2268 | }; |
| 2269 | |
| 2270 | static void dp_unregister_genl(int n_families) |
| 2271 | { |
| 2272 | int i; |
| 2273 | |
| 2274 | for (i = 0; i < n_families; i++) |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 2275 | genl_unregister_family(dp_genl_families[i]); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2276 | } |
| 2277 | |
| 2278 | static int dp_register_genl(void) |
| 2279 | { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2280 | int err; |
| 2281 | int i; |
| 2282 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2283 | for (i = 0; i < ARRAY_SIZE(dp_genl_families); i++) { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2284 | |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 2285 | err = genl_register_family(dp_genl_families[i]); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2286 | if (err) |
| 2287 | goto error; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2288 | } |
| 2289 | |
| 2290 | return 0; |
| 2291 | |
| 2292 | error: |
Pravin B Shelar | 0c200ef | 2014-05-06 16:44:50 -0700 | [diff] [blame] | 2293 | dp_unregister_genl(i); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2294 | return err; |
| 2295 | } |
| 2296 | |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2297 | static int __net_init ovs_init_net(struct net *net) |
| 2298 | { |
| 2299 | struct ovs_net *ovs_net = net_generic(net, ovs_net_id); |
| 2300 | |
| 2301 | INIT_LIST_HEAD(&ovs_net->dps); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2302 | INIT_WORK(&ovs_net->dp_notify_work, ovs_dp_notify_wq); |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 2303 | ovs_ct_init(net); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2304 | return 0; |
| 2305 | } |
| 2306 | |
Pravin B Shelar | 7b4577a | 2015-02-17 11:23:10 -0800 | [diff] [blame] | 2307 | static void __net_exit list_vports_from_net(struct net *net, struct net *dnet, |
| 2308 | struct list_head *head) |
| 2309 | { |
| 2310 | struct ovs_net *ovs_net = net_generic(net, ovs_net_id); |
| 2311 | struct datapath *dp; |
| 2312 | |
| 2313 | list_for_each_entry(dp, &ovs_net->dps, list_node) { |
| 2314 | int i; |
| 2315 | |
| 2316 | for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) { |
| 2317 | struct vport *vport; |
| 2318 | |
| 2319 | hlist_for_each_entry(vport, &dp->ports[i], dp_hash_node) { |
Pravin B Shelar | 7b4577a | 2015-02-17 11:23:10 -0800 | [diff] [blame] | 2320 | if (vport->ops->type != OVS_VPORT_TYPE_INTERNAL) |
| 2321 | continue; |
| 2322 | |
Thomas Graf | be4ace6 | 2015-07-21 10:44:04 +0200 | [diff] [blame] | 2323 | if (dev_net(vport->dev) == dnet) |
Pravin B Shelar | 7b4577a | 2015-02-17 11:23:10 -0800 | [diff] [blame] | 2324 | list_add(&vport->detach_list, head); |
| 2325 | } |
| 2326 | } |
| 2327 | } |
| 2328 | } |
| 2329 | |
| 2330 | static void __net_exit ovs_exit_net(struct net *dnet) |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2331 | { |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2332 | struct datapath *dp, *dp_next; |
Pravin B Shelar | 7b4577a | 2015-02-17 11:23:10 -0800 | [diff] [blame] | 2333 | struct ovs_net *ovs_net = net_generic(dnet, ovs_net_id); |
| 2334 | struct vport *vport, *vport_next; |
| 2335 | struct net *net; |
| 2336 | LIST_HEAD(head); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2337 | |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 2338 | ovs_ct_exit(dnet); |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2339 | ovs_lock(); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2340 | list_for_each_entry_safe(dp, dp_next, &ovs_net->dps, list_node) |
| 2341 | __dp_destroy(dp); |
Pravin B Shelar | 7b4577a | 2015-02-17 11:23:10 -0800 | [diff] [blame] | 2342 | |
| 2343 | rtnl_lock(); |
| 2344 | for_each_net(net) |
| 2345 | list_vports_from_net(net, dnet, &head); |
| 2346 | rtnl_unlock(); |
| 2347 | |
| 2348 | /* Detach all vports from given namespace. */ |
| 2349 | list_for_each_entry_safe(vport, vport_next, &head, detach_list) { |
| 2350 | list_del(&vport->detach_list); |
| 2351 | ovs_dp_detach_port(vport); |
| 2352 | } |
| 2353 | |
Pravin B Shelar | 8e4e171 | 2013-04-15 13:23:03 -0700 | [diff] [blame] | 2354 | ovs_unlock(); |
| 2355 | |
| 2356 | cancel_work_sync(&ovs_net->dp_notify_work); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2357 | } |
| 2358 | |
| 2359 | static struct pernet_operations ovs_net_ops = { |
| 2360 | .init = ovs_init_net, |
| 2361 | .exit = ovs_exit_net, |
| 2362 | .id = &ovs_net_id, |
| 2363 | .size = sizeof(struct ovs_net), |
| 2364 | }; |
| 2365 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2366 | static int __init dp_init(void) |
| 2367 | { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2368 | int err; |
| 2369 | |
YOSHIFUJI Hideaki / 吉藤英明 | 3523b29 | 2013-01-09 07:19:55 +0000 | [diff] [blame] | 2370 | BUILD_BUG_ON(sizeof(struct ovs_skb_cb) > FIELD_SIZEOF(struct sk_buff, cb)); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2371 | |
| 2372 | pr_info("Open vSwitch switching datapath\n"); |
| 2373 | |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 2374 | err = action_fifos_init(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2375 | if (err) |
| 2376 | goto error; |
| 2377 | |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 2378 | err = ovs_internal_dev_rtnl_link_register(); |
| 2379 | if (err) |
| 2380 | goto error_action_fifos_exit; |
| 2381 | |
Jiri Pirko | 5b9e7e1 | 2014-06-26 09:58:26 +0200 | [diff] [blame] | 2382 | err = ovs_flow_init(); |
| 2383 | if (err) |
| 2384 | goto error_unreg_rtnl_link; |
| 2385 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2386 | err = ovs_vport_init(); |
| 2387 | if (err) |
| 2388 | goto error_flow_exit; |
| 2389 | |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2390 | err = register_pernet_device(&ovs_net_ops); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2391 | if (err) |
| 2392 | goto error_vport_exit; |
| 2393 | |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2394 | err = register_netdevice_notifier(&ovs_dp_device_notifier); |
| 2395 | if (err) |
| 2396 | goto error_netns_exit; |
| 2397 | |
Thomas Graf | 62b9c8d | 2014-10-22 17:29:06 +0200 | [diff] [blame] | 2398 | err = ovs_netdev_init(); |
| 2399 | if (err) |
| 2400 | goto error_unreg_notifier; |
| 2401 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2402 | err = dp_register_genl(); |
| 2403 | if (err < 0) |
Thomas Graf | 62b9c8d | 2014-10-22 17:29:06 +0200 | [diff] [blame] | 2404 | goto error_unreg_netdev; |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2405 | |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2406 | return 0; |
| 2407 | |
Thomas Graf | 62b9c8d | 2014-10-22 17:29:06 +0200 | [diff] [blame] | 2408 | error_unreg_netdev: |
| 2409 | ovs_netdev_exit(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2410 | error_unreg_notifier: |
| 2411 | unregister_netdevice_notifier(&ovs_dp_device_notifier); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2412 | error_netns_exit: |
| 2413 | unregister_pernet_device(&ovs_net_ops); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2414 | error_vport_exit: |
| 2415 | ovs_vport_exit(); |
| 2416 | error_flow_exit: |
| 2417 | ovs_flow_exit(); |
Jiri Pirko | 5b9e7e1 | 2014-06-26 09:58:26 +0200 | [diff] [blame] | 2418 | error_unreg_rtnl_link: |
| 2419 | ovs_internal_dev_rtnl_link_unregister(); |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 2420 | error_action_fifos_exit: |
| 2421 | action_fifos_exit(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2422 | error: |
| 2423 | return err; |
| 2424 | } |
| 2425 | |
| 2426 | static void dp_cleanup(void) |
| 2427 | { |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2428 | dp_unregister_genl(ARRAY_SIZE(dp_genl_families)); |
Thomas Graf | 62b9c8d | 2014-10-22 17:29:06 +0200 | [diff] [blame] | 2429 | ovs_netdev_exit(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2430 | unregister_netdevice_notifier(&ovs_dp_device_notifier); |
Pravin B Shelar | 46df7b8 | 2012-02-22 19:58:59 -0800 | [diff] [blame] | 2431 | unregister_pernet_device(&ovs_net_ops); |
| 2432 | rcu_barrier(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2433 | ovs_vport_exit(); |
| 2434 | ovs_flow_exit(); |
Jiri Pirko | 5b9e7e1 | 2014-06-26 09:58:26 +0200 | [diff] [blame] | 2435 | ovs_internal_dev_rtnl_link_unregister(); |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 2436 | action_fifos_exit(); |
Jesse Gross | ccb1352 | 2011-10-25 19:26:31 -0700 | [diff] [blame] | 2437 | } |
| 2438 | |
| 2439 | module_init(dp_init); |
| 2440 | module_exit(dp_cleanup); |
| 2441 | |
| 2442 | MODULE_DESCRIPTION("Open vSwitch switching datapath"); |
| 2443 | MODULE_LICENSE("GPL"); |
Thadeu Lima de Souza Cascardo | ed22709 | 2016-09-09 17:42:30 -0300 | [diff] [blame] | 2444 | MODULE_ALIAS_GENL_FAMILY(OVS_DATAPATH_FAMILY); |
| 2445 | MODULE_ALIAS_GENL_FAMILY(OVS_VPORT_FAMILY); |
| 2446 | MODULE_ALIAS_GENL_FAMILY(OVS_FLOW_FAMILY); |
| 2447 | MODULE_ALIAS_GENL_FAMILY(OVS_PACKET_FAMILY); |