X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=datapath%2Fdatapath.c;h=30e26a770dc14296761ddd5b516532af200ede00;hb=5ca1ba484bd9ade5116a49cf241cb98219d7d696;hp=a964c27f469e3618d854f47ff9da9068c40ea900;hpb=b85d8d61a6c3b9c2fa578fa62c795a93544764af;p=sliver-openvswitch.git diff --git a/datapath/datapath.c b/datapath/datapath.c index a964c27f4..30e26a770 100644 --- a/datapath/datapath.c +++ b/datapath/datapath.c @@ -1,13 +1,21 @@ /* - * Copyright (c) 2007, 2008, 2009, 2010, 2011 Nicira Networks. - * Distributed under the terms of the GNU GPL version 2. + * Copyright (c) 2007-2012 Nicira, Inc. * - * Significant portions of this file may be copied from parts of the Linux - * kernel, by Linus Torvalds and others. + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA */ -/* Functions for managing the dp interface/device. */ - #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include @@ -31,35 +39,37 @@ #include #include #include -#include #include -#include #include #include #include #include #include +#include #include #include -#include #include +#include +#include -#include "openvswitch/datapath-protocol.h" #include "checksum.h" #include "datapath.h" -#include "actions.h" #include "flow.h" -#include "table.h" +#include "genl_exec.h" #include "vlan.h" +#include "tunnel.h" #include "vport-internal_dev.h" #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18) || \ - LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0) -#error Kernels before 2.6.18 or after 3.0 are not supported by this version of Open vSwitch. + LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0) +#error Kernels before 2.6.18 or after 3.7 are not supported by this version of Open vSwitch. #endif -int (*dp_ioctl_hook)(struct net_device *dev, struct ifreq *rq, int cmd); -EXPORT_SYMBOL(dp_ioctl_hook); +#define REHASH_FLOW_INTERVAL (10 * 60 * HZ) +static void rehash_flow_table(struct work_struct *work); +static DECLARE_DELAYED_WORK(rehash_flow_wq, rehash_flow_table); + +int ovs_net_id __read_mostly; /** * DOC: Locking: @@ -68,8 +78,8 @@ EXPORT_SYMBOL(dp_ioctl_hook); * etc.) are protected by RTNL. * * Writes to other state (flow table modifications, set miscellaneous datapath - * parameters such as drop frags, etc.) are protected by genl_mutex. The RTNL - * lock nests inside genl_mutex. + * parameters, etc.) are protected by genl_mutex. The RTNL lock nests inside + * genl_mutex. * * Reads are protected by RCU. * @@ -78,25 +88,23 @@ EXPORT_SYMBOL(dp_ioctl_hook); * each other. */ -/* Global list of datapaths to enable dumping them all out. - * Protected by genl_mutex. - */ -static LIST_HEAD(dps); - static struct vport *new_vport(const struct vport_parms *); -static int queue_userspace_packets(struct datapath *, struct sk_buff *, - const struct dp_upcall_info *); +static int queue_gso_packets(struct net *, int dp_ifindex, struct sk_buff *, + const struct dp_upcall_info *); +static int queue_userspace_packet(struct net *, int dp_ifindex, + struct sk_buff *, + const struct dp_upcall_info *); /* Must be called with rcu_read_lock, genl_mutex, or RTNL lock. */ -struct datapath *get_dp(int dp_ifindex) +static struct datapath *get_dp(struct net *net, int dp_ifindex) { struct datapath *dp = NULL; struct net_device *dev; rcu_read_lock(); - dev = dev_get_by_index_rcu(&init_net, dp_ifindex); + dev = dev_get_by_index_rcu(net, dp_ifindex); if (dev) { - struct vport *vport = internal_dev_get_vport(dev); + struct vport *vport = ovs_internal_dev_get_vport(dev); if (vport) dp = vport->dp; } @@ -104,130 +112,61 @@ struct datapath *get_dp(int dp_ifindex) return dp; } -EXPORT_SYMBOL_GPL(get_dp); - -/* Must be called with genl_mutex. */ -static struct tbl *get_table_protected(struct datapath *dp) -{ - return rcu_dereference_protected(dp->table, lockdep_genl_is_held()); -} /* Must be called with rcu_read_lock or RTNL lock. */ -static struct vport *get_vport_protected(struct datapath *dp, u16 port_no) -{ - return rcu_dereference_rtnl(dp->ports[port_no]); -} - -/* Must be called with rcu_read_lock or RTNL lock. */ -const char *dp_name(const struct datapath *dp) -{ - return vport_get_name(rcu_dereference_rtnl(dp->ports[ODPP_LOCAL])); -} - -static inline size_t br_nlmsg_size(void) +const char *ovs_dp_name(const struct datapath *dp) { - return NLMSG_ALIGN(sizeof(struct ifinfomsg)) - + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ - + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ - + nla_total_size(4) /* IFLA_MASTER */ - + nla_total_size(4) /* IFLA_MTU */ - + nla_total_size(4) /* IFLA_LINK */ - + nla_total_size(1); /* IFLA_OPERSTATE */ + struct vport *vport = ovs_vport_rtnl_rcu(dp, OVSP_LOCAL); + return vport->ops->get_name(vport); } -/* Caller must hold RTNL lock. */ -static int dp_fill_ifinfo(struct sk_buff *skb, - const struct vport *port, - int event, unsigned int flags) +static int get_dpifindex(struct datapath *dp) { - struct datapath *dp = port->dp; - int ifindex = vport_get_ifindex(port); - int iflink = vport_get_iflink(port); - struct ifinfomsg *hdr; - struct nlmsghdr *nlh; - - if (ifindex < 0) - return ifindex; - - if (iflink < 0) - return iflink; - - nlh = nlmsg_put(skb, 0, 0, event, sizeof(*hdr), flags); - if (nlh == NULL) - return -EMSGSIZE; - - hdr = nlmsg_data(nlh); - hdr->ifi_family = AF_BRIDGE; - hdr->__ifi_pad = 0; - hdr->ifi_type = ARPHRD_ETHER; - hdr->ifi_index = ifindex; - hdr->ifi_flags = vport_get_flags(port); - hdr->ifi_change = 0; - - NLA_PUT_STRING(skb, IFLA_IFNAME, vport_get_name(port)); - NLA_PUT_U32(skb, IFLA_MASTER, - vport_get_ifindex(get_vport_protected(dp, ODPP_LOCAL))); - NLA_PUT_U32(skb, IFLA_MTU, vport_get_mtu(port)); -#ifdef IFLA_OPERSTATE - NLA_PUT_U8(skb, IFLA_OPERSTATE, - vport_is_running(port) - ? vport_get_operstate(port) - : IF_OPER_DOWN); -#endif + struct vport *local; + int ifindex; - NLA_PUT(skb, IFLA_ADDRESS, ETH_ALEN, vport_get_addr(port)); + rcu_read_lock(); - if (ifindex != iflink) - NLA_PUT_U32(skb, IFLA_LINK,iflink); + local = ovs_vport_rcu(dp, OVSP_LOCAL); + if (local) + ifindex = local->ops->get_ifindex(local); + else + ifindex = 0; - return nlmsg_end(skb, nlh); + rcu_read_unlock(); -nla_put_failure: - nlmsg_cancel(skb, nlh); - return -EMSGSIZE; + return ifindex; } -/* Caller must hold RTNL lock. */ -static void dp_ifinfo_notify(int event, struct vport *port) +static void destroy_dp_rcu(struct rcu_head *rcu) { - struct sk_buff *skb; - int err = -ENOBUFS; - - skb = nlmsg_new(br_nlmsg_size(), GFP_KERNEL); - if (skb == NULL) - goto errout; + struct datapath *dp = container_of(rcu, struct datapath, rcu); - err = dp_fill_ifinfo(skb, port, event, 0); - if (err < 0) { - /* -EMSGSIZE implies BUG in br_nlmsg_size() */ - WARN_ON(err == -EMSGSIZE); - kfree_skb(skb); - goto errout; - } - rtnl_notify(skb, &init_net, 0, RTNLGRP_LINK, NULL, GFP_KERNEL); - return; -errout: - if (err < 0) - rtnl_set_sk_err(&init_net, RTNLGRP_LINK, err); + ovs_flow_tbl_destroy((__force struct flow_table *)dp->table); + free_percpu(dp->stats_percpu); + release_net(ovs_dp_get_net(dp)); + kfree(dp->ports); + kfree(dp); } -static void release_dp(struct kobject *kobj) +static struct hlist_head *vport_hash_bucket(const struct datapath *dp, + u16 port_no) { - struct datapath *dp = container_of(kobj, struct datapath, ifobj); - kfree(dp); + return &dp->ports[port_no & (DP_VPORT_HASH_BUCKETS - 1)]; } -static struct kobj_type dp_ktype = { - .release = release_dp -}; - -static void destroy_dp_rcu(struct rcu_head *rcu) +struct vport *ovs_lookup_vport(const struct datapath *dp, u16 port_no) { - struct datapath *dp = container_of(rcu, struct datapath, rcu); + struct vport *vport; + struct hlist_node *n; + struct hlist_head *head; - tbl_destroy((struct tbl __force *)dp->table, flow_free_tbl); - free_percpu(dp->stats_percpu); - kobject_put(&dp->ifobj); + head = vport_hash_bucket(dp, port_no); + hlist_for_each_entry_rcu(vport, n, head, dp_hash_node) { + if (vport->port_no == port_no) + return vport; + } + return NULL; } /* Called with RTNL lock and genl_lock. */ @@ -235,377 +174,479 @@ static struct vport *new_vport(const struct vport_parms *parms) { struct vport *vport; - vport = vport_add(parms); + vport = ovs_vport_add(parms); if (!IS_ERR(vport)) { struct datapath *dp = parms->dp; + struct hlist_head *head = vport_hash_bucket(dp, vport->port_no); - rcu_assign_pointer(dp->ports[parms->port_no], vport); - list_add(&vport->node, &dp->port_list); - - dp_ifinfo_notify(RTM_NEWLINK, vport); + hlist_add_head_rcu(&vport->dp_hash_node, head); } - return vport; } /* Called with RTNL lock. */ -int dp_detach_port(struct vport *p) +void ovs_dp_detach_port(struct vport *p) { ASSERT_RTNL(); - if (p->port_no != ODPP_LOCAL) - dp_sysfs_del_if(p); - dp_ifinfo_notify(RTM_DELLINK, p); - /* First drop references to device. */ - list_del(&p->node); - rcu_assign_pointer(p->dp->ports[p->port_no], NULL); + hlist_del_rcu(&p->dp_hash_node); /* Then destroy it. */ - return vport_del(p); + ovs_vport_del(p); } /* Must be called with rcu_read_lock. */ -void dp_process_received_packet(struct vport *p, struct sk_buff *skb) +void ovs_dp_process_received_packet(struct vport *p, struct sk_buff *skb) { struct datapath *dp = p->dp; + struct sw_flow *flow; struct dp_stats_percpu *stats; - int stats_counter_off; + u64 *stats_counter; int error; - OVS_CB(skb)->vport = p; + stats = this_cpu_ptr(dp->stats_percpu); if (!OVS_CB(skb)->flow) { struct sw_flow_key key; - struct tbl_node *flow_node; int key_len; - bool is_frag; /* Extract flow from 'skb' into 'key'. */ - error = flow_extract(skb, p->port_no, &key, &key_len, &is_frag); + error = ovs_flow_extract(skb, p->port_no, &key, &key_len); if (unlikely(error)) { kfree_skb(skb); return; } - if (is_frag && dp->drop_frags) { - consume_skb(skb); - stats_counter_off = offsetof(struct dp_stats_percpu, n_frags); - goto out; - } - /* Look up flow. */ - flow_node = tbl_lookup(rcu_dereference(dp->table), &key, key_len, - flow_hash(&key, key_len), flow_cmp); - if (unlikely(!flow_node)) { + flow = ovs_flow_tbl_lookup(rcu_dereference(dp->table), + &key, key_len); + if (unlikely(!flow)) { struct dp_upcall_info upcall; - upcall.cmd = ODP_PACKET_CMD_MISS; + upcall.cmd = OVS_PACKET_CMD_MISS; upcall.key = &key; - upcall.userdata = 0; - upcall.sample_pool = 0; - upcall.actions = NULL; - upcall.actions_len = 0; - dp_upcall(dp, skb, &upcall); - stats_counter_off = offsetof(struct dp_stats_percpu, n_missed); + upcall.userdata = NULL; + upcall.portid = p->upcall_portid; + ovs_dp_upcall(dp, skb, &upcall); + consume_skb(skb); + stats_counter = &stats->n_missed; goto out; } - OVS_CB(skb)->flow = flow_cast(flow_node); + OVS_CB(skb)->flow = flow; } - stats_counter_off = offsetof(struct dp_stats_percpu, n_hit); - flow_used(OVS_CB(skb)->flow, skb); - execute_actions(dp, skb); + stats_counter = &stats->n_hit; + ovs_flow_used(OVS_CB(skb)->flow, skb); + ovs_execute_actions(dp, skb); out: /* Update datapath statistics. */ - local_bh_disable(); - stats = per_cpu_ptr(dp->stats_percpu, smp_processor_id()); - - write_seqcount_begin(&stats->seqlock); - (*(u64 *)((u8 *)stats + stats_counter_off))++; - write_seqcount_end(&stats->seqlock); - - local_bh_enable(); -} - -static void copy_and_csum_skb(struct sk_buff *skb, void *to) -{ - u16 csum_start, csum_offset; - __wsum csum; - - get_skb_csum_pointers(skb, &csum_start, &csum_offset); - csum_start -= skb_headroom(skb); - - skb_copy_bits(skb, 0, to, csum_start); - - csum = skb_copy_and_csum_bits(skb, csum_start, to + csum_start, - skb->len - csum_start, 0); - *(__sum16 *)(to + csum_start + csum_offset) = csum_fold(csum); + u64_stats_update_begin(&stats->sync); + (*stats_counter)++; + u64_stats_update_end(&stats->sync); } static struct genl_family dp_packet_genl_family = { .id = GENL_ID_GENERATE, - .hdrsize = sizeof(struct odp_header), - .name = ODP_PACKET_FAMILY, - .version = 1, - .maxattr = ODP_PACKET_ATTR_MAX + .hdrsize = sizeof(struct ovs_header), + .name = OVS_PACKET_FAMILY, + .version = OVS_PACKET_VERSION, + .maxattr = OVS_PACKET_ATTR_MAX, + SET_NETNSOK }; -/* Generic Netlink multicast groups for upcalls. - * - * We really want three unique multicast groups per datapath, but we can't even - * get one, because genl_register_mc_group() takes genl_lock, which is also - * held during Generic Netlink message processing, so trying to acquire - * multicast groups during ODP_DP_NEW processing deadlocks. Instead, we - * preallocate a few groups and use them round-robin for datapaths. Collision - * isn't fatal--multicast listeners should check that the family is the one - * that they want and discard others--but it wastes time and memory to receive - * unwanted messages. - */ -#define PACKET_N_MC_GROUPS 16 -static struct genl_multicast_group packet_mc_groups[PACKET_N_MC_GROUPS]; - -static u32 packet_mc_group(struct datapath *dp, u8 cmd) -{ - u32 idx; - BUILD_BUG_ON_NOT_POWER_OF_2(PACKET_N_MC_GROUPS); - - idx = jhash_2words(dp->dp_ifindex, cmd, 0) & (PACKET_N_MC_GROUPS - 1); - return packet_mc_groups[idx].id; -} - -static int packet_register_mc_groups(void) -{ - int i; - - for (i = 0; i < PACKET_N_MC_GROUPS; i++) { - struct genl_multicast_group *group = &packet_mc_groups[i]; - int error; - - sprintf(group->name, "packet%d", i); - error = genl_register_mc_group(&dp_packet_genl_family, group); - if (error) - return error; - } - return 0; -} - -int dp_upcall(struct datapath *dp, struct sk_buff *skb, const struct dp_upcall_info *upcall_info) +int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb, + const struct dp_upcall_info *upcall_info) { struct dp_stats_percpu *stats; + int dp_ifindex; int err; - WARN_ON_ONCE(skb_shared(skb)); - - forward_ip_summed(skb, true); + if (upcall_info->portid == 0) { + err = -ENOTCONN; + goto err; + } - /* Break apart GSO packets into their component pieces. Otherwise - * userspace may try to stuff a 64kB packet into a 1500-byte MTU. */ - if (skb_is_gso(skb)) { - struct sk_buff *nskb = skb_gso_segment(skb, NETIF_F_SG | NETIF_F_HW_CSUM); - - if (IS_ERR(nskb)) { - kfree_skb(skb); - err = PTR_ERR(nskb); - goto err; - } - consume_skb(skb); - skb = nskb; + dp_ifindex = get_dpifindex(dp); + if (!dp_ifindex) { + err = -ENODEV; + goto err; } - err = queue_userspace_packets(dp, skb, upcall_info); + forward_ip_summed(skb, true); + + if (!skb_is_gso(skb)) + err = queue_userspace_packet(ovs_dp_get_net(dp), dp_ifindex, skb, upcall_info); + else + err = queue_gso_packets(ovs_dp_get_net(dp), dp_ifindex, skb, upcall_info); if (err) goto err; return 0; err: - local_bh_disable(); - stats = per_cpu_ptr(dp->stats_percpu, smp_processor_id()); + stats = this_cpu_ptr(dp->stats_percpu); - write_seqcount_begin(&stats->seqlock); + u64_stats_update_begin(&stats->sync); stats->n_lost++; - write_seqcount_end(&stats->seqlock); - - local_bh_enable(); + u64_stats_update_end(&stats->sync); return err; } -/* Send each packet in the 'skb' list to userspace for 'dp' as directed by - * 'upcall_info'. There will be only one packet unless we broke up a GSO - * packet. - */ -static int queue_userspace_packets(struct datapath *dp, struct sk_buff *skb, - const struct dp_upcall_info *upcall_info) +static int queue_gso_packets(struct net *net, int dp_ifindex, + struct sk_buff *skb, + const struct dp_upcall_info *upcall_info) { - u32 group = packet_mc_group(dp, upcall_info->cmd); - struct sk_buff *nskb; + unsigned short gso_type = skb_shinfo(skb)->gso_type; + struct dp_upcall_info later_info; + struct sw_flow_key later_key; + struct sk_buff *segs, *nskb; int err; - do { - struct odp_header *upcall; - struct sk_buff *user_skb; /* to be queued to userspace */ - struct nlattr *nla; - unsigned int len; + segs = skb_gso_segment(skb, NETIF_F_SG | NETIF_F_HW_CSUM); + if (IS_ERR(segs)) + return PTR_ERR(segs); - nskb = skb->next; - skb->next = NULL; - - err = vlan_deaccel_tag(skb); - if (unlikely(err)) - goto err_kfree_skbs; - - if (nla_attr_size(skb->len) > USHRT_MAX) - goto err_kfree_skbs; - - len = sizeof(struct odp_header); - len += nla_total_size(skb->len); - len += nla_total_size(FLOW_BUFSIZE); - if (upcall_info->userdata) - len += nla_total_size(8); - if (upcall_info->sample_pool) - len += nla_total_size(4); - if (upcall_info->actions_len) - len += nla_total_size(upcall_info->actions_len); - - user_skb = genlmsg_new(len, GFP_ATOMIC); - if (!user_skb) { - netlink_set_err(INIT_NET_GENL_SOCK, 0, group, -ENOBUFS); - goto err_kfree_skbs; - } - - upcall = genlmsg_put(user_skb, 0, 0, &dp_packet_genl_family, 0, upcall_info->cmd); - upcall->dp_ifindex = dp->dp_ifindex; - - nla = nla_nest_start(user_skb, ODP_PACKET_ATTR_KEY); - flow_to_nlattrs(upcall_info->key, user_skb); - nla_nest_end(user_skb, nla); - - if (upcall_info->userdata) - nla_put_u64(user_skb, ODP_PACKET_ATTR_USERDATA, upcall_info->userdata); - if (upcall_info->sample_pool) - nla_put_u32(user_skb, ODP_PACKET_ATTR_SAMPLE_POOL, upcall_info->sample_pool); - if (upcall_info->actions_len) { - const struct nlattr *actions = upcall_info->actions; - u32 actions_len = upcall_info->actions_len; + /* Queue all of the segments. */ + skb = segs; + do { + err = queue_userspace_packet(net, dp_ifindex, skb, upcall_info); + if (err) + break; - nla = nla_nest_start(user_skb, ODP_PACKET_ATTR_ACTIONS); - memcpy(__skb_put(user_skb, actions_len), actions, actions_len); - nla_nest_end(user_skb, nla); + if (skb == segs && gso_type & SKB_GSO_UDP) { + /* The initial flow key extracted by ovs_flow_extract() + * in this case is for a first fragment, so we need to + * properly mark later fragments. + */ + later_key = *upcall_info->key; + later_key.ip.frag = OVS_FRAG_TYPE_LATER; + + later_info = *upcall_info; + later_info.key = &later_key; + upcall_info = &later_info; } + } while ((skb = skb->next)); - nla = __nla_reserve(user_skb, ODP_PACKET_ATTR_PACKET, skb->len); - if (skb->ip_summed == CHECKSUM_PARTIAL) - copy_and_csum_skb(skb, nla_data(nla)); + /* Free all of the segments. */ + skb = segs; + do { + nskb = skb->next; + if (err) + kfree_skb(skb); else - skb_copy_bits(skb, 0, nla_data(nla), skb->len); + consume_skb(skb); + } while ((skb = nskb)); + return err; +} - err = genlmsg_multicast(user_skb, 0, group, GFP_ATOMIC); +static int queue_userspace_packet(struct net *net, int dp_ifindex, + struct sk_buff *skb, + const struct dp_upcall_info *upcall_info) +{ + struct ovs_header *upcall; + struct sk_buff *nskb = NULL; + struct sk_buff *user_skb; /* to be queued to userspace */ + struct nlattr *nla; + unsigned int len; + int err; + + if (vlan_tx_tag_present(skb)) { + nskb = skb_clone(skb, GFP_ATOMIC); + if (!nskb) + return -ENOMEM; + + err = vlan_deaccel_tag(nskb); if (err) - goto err_kfree_skbs; + return err; - consume_skb(skb); skb = nskb; - } while (skb); - return 0; + } -err_kfree_skbs: - kfree_skb(skb); - while ((skb = nskb) != NULL) { - nskb = skb->next; - kfree_skb(skb); + if (nla_attr_size(skb->len) > USHRT_MAX) { + err = -EFBIG; + goto out; + } + + len = sizeof(struct ovs_header); + len += nla_total_size(skb->len); + len += nla_total_size(FLOW_BUFSIZE); + if (upcall_info->cmd == OVS_PACKET_CMD_ACTION) + len += nla_total_size(8); + + user_skb = genlmsg_new(len, GFP_ATOMIC); + if (!user_skb) { + err = -ENOMEM; + goto out; } + + upcall = genlmsg_put(user_skb, 0, 0, &dp_packet_genl_family, + 0, upcall_info->cmd); + upcall->dp_ifindex = dp_ifindex; + + nla = nla_nest_start(user_skb, OVS_PACKET_ATTR_KEY); + ovs_flow_to_nlattrs(upcall_info->key, user_skb); + nla_nest_end(user_skb, nla); + + if (upcall_info->userdata) + nla_put_u64(user_skb, OVS_PACKET_ATTR_USERDATA, + nla_get_u64(upcall_info->userdata)); + + nla = __nla_reserve(user_skb, OVS_PACKET_ATTR_PACKET, skb->len); + + skb_copy_and_csum_dev(skb, nla_data(nla)); + + err = genlmsg_unicast(net, user_skb, upcall_info->portid); + +out: + kfree_skb(nskb); return err; } /* Called with genl_mutex. */ -static int flush_flows(int dp_ifindex) +static int flush_flows(struct datapath *dp) { - struct tbl *old_table; - struct tbl *new_table; - struct datapath *dp; + struct flow_table *old_table; + struct flow_table *new_table; - dp = get_dp(dp_ifindex); - if (!dp) - return -ENODEV; - - old_table = get_table_protected(dp); - new_table = tbl_create(TBL_MIN_BUCKETS); + old_table = genl_dereference(dp->table); + new_table = ovs_flow_tbl_alloc(TBL_MIN_BUCKETS); if (!new_table) return -ENOMEM; rcu_assign_pointer(dp->table, new_table); - tbl_deferred_destroy(old_table, flow_free_tbl); - + ovs_flow_tbl_deferred_destroy(old_table); return 0; } -static int validate_actions(const struct nlattr *attr) +static int validate_actions(const struct nlattr *attr, + const struct sw_flow_key *key, int depth); + +static int validate_sample(const struct nlattr *attr, + const struct sw_flow_key *key, int depth) { + const struct nlattr *attrs[OVS_SAMPLE_ATTR_MAX + 1]; + const struct nlattr *probability, *actions; const struct nlattr *a; int rem; + memset(attrs, 0, sizeof(attrs)); + nla_for_each_nested(a, attr, rem) { + int type = nla_type(a); + if (!type || type > OVS_SAMPLE_ATTR_MAX || attrs[type]) + return -EINVAL; + attrs[type] = a; + } + if (rem) + return -EINVAL; + + probability = attrs[OVS_SAMPLE_ATTR_PROBABILITY]; + if (!probability || nla_len(probability) != sizeof(u32)) + return -EINVAL; + + actions = attrs[OVS_SAMPLE_ATTR_ACTIONS]; + if (!actions || (nla_len(actions) && nla_len(actions) < NLA_HDRLEN)) + return -EINVAL; + return validate_actions(actions, key, depth + 1); +} + +static int validate_tp_port(const struct sw_flow_key *flow_key) +{ + if (flow_key->eth.type == htons(ETH_P_IP)) { + if (flow_key->ipv4.tp.src || flow_key->ipv4.tp.dst) + return 0; + } else if (flow_key->eth.type == htons(ETH_P_IPV6)) { + if (flow_key->ipv6.tp.src || flow_key->ipv6.tp.dst) + return 0; + } + + return -EINVAL; +} + +static int validate_set(const struct nlattr *a, + const struct sw_flow_key *flow_key) +{ + const struct nlattr *ovs_key = nla_data(a); + int key_type = nla_type(ovs_key); + + /* There can be only one key in a action */ + if (nla_total_size(nla_len(ovs_key)) != nla_len(a)) + return -EINVAL; + + if (key_type > OVS_KEY_ATTR_MAX || + nla_len(ovs_key) != ovs_key_lens[key_type]) + return -EINVAL; + + switch (key_type) { + const struct ovs_key_ipv4 *ipv4_key; + const struct ovs_key_ipv4_tunnel *tun_key; + const struct ovs_key_ipv6 *ipv6_key; + + case OVS_KEY_ATTR_PRIORITY: + case OVS_KEY_ATTR_TUN_ID: + case OVS_KEY_ATTR_ETHERNET: + break; + + case OVS_KEY_ATTR_SKB_MARK: +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) && !defined(CONFIG_NETFILTER) + if (nla_get_u32(ovs_key) != 0) + return -EINVAL; +#endif + break; + + case OVS_KEY_ATTR_IPV4_TUNNEL: + tun_key = nla_data(ovs_key); + if (!tun_key->ipv4_dst) + return -EINVAL; + break; + + case OVS_KEY_ATTR_IPV4: + if (flow_key->eth.type != htons(ETH_P_IP)) + return -EINVAL; + + if (!flow_key->ip.proto) + return -EINVAL; + + ipv4_key = nla_data(ovs_key); + if (ipv4_key->ipv4_proto != flow_key->ip.proto) + return -EINVAL; + + if (ipv4_key->ipv4_frag != flow_key->ip.frag) + return -EINVAL; + + break; + + case OVS_KEY_ATTR_IPV6: + if (flow_key->eth.type != htons(ETH_P_IPV6)) + return -EINVAL; + + if (!flow_key->ip.proto) + return -EINVAL; + + ipv6_key = nla_data(ovs_key); + if (ipv6_key->ipv6_proto != flow_key->ip.proto) + return -EINVAL; + + if (ipv6_key->ipv6_frag != flow_key->ip.frag) + return -EINVAL; + + if (ntohl(ipv6_key->ipv6_label) & 0xFFF00000) + return -EINVAL; + + break; + + case OVS_KEY_ATTR_TCP: + if (flow_key->ip.proto != IPPROTO_TCP) + return -EINVAL; + + return validate_tp_port(flow_key); + + case OVS_KEY_ATTR_UDP: + if (flow_key->ip.proto != IPPROTO_UDP) + return -EINVAL; + + return validate_tp_port(flow_key); + + default: + return -EINVAL; + } + + return 0; +} + +static int validate_userspace(const struct nlattr *attr) +{ + static const struct nla_policy userspace_policy[OVS_USERSPACE_ATTR_MAX + 1] = { + [OVS_USERSPACE_ATTR_PID] = {.type = NLA_U32 }, + [OVS_USERSPACE_ATTR_USERDATA] = {.type = NLA_U64 }, + }; + struct nlattr *a[OVS_USERSPACE_ATTR_MAX + 1]; + int error; + + error = nla_parse_nested(a, OVS_USERSPACE_ATTR_MAX, + attr, userspace_policy); + if (error) + return error; + + if (!a[OVS_USERSPACE_ATTR_PID] || + !nla_get_u32(a[OVS_USERSPACE_ATTR_PID])) + return -EINVAL; + + return 0; +} + +static int validate_actions(const struct nlattr *attr, + const struct sw_flow_key *key, int depth) +{ + const struct nlattr *a; + int rem, err; + + if (depth >= SAMPLE_ACTION_DEPTH) + return -EOVERFLOW; + nla_for_each_nested(a, attr, rem) { - static const u32 action_lens[ODP_ACTION_ATTR_MAX + 1] = { - [ODP_ACTION_ATTR_OUTPUT] = 4, - [ODP_ACTION_ATTR_USERSPACE] = 8, - [ODP_ACTION_ATTR_SET_DL_TCI] = 2, - [ODP_ACTION_ATTR_STRIP_VLAN] = 0, - [ODP_ACTION_ATTR_SET_DL_SRC] = ETH_ALEN, - [ODP_ACTION_ATTR_SET_DL_DST] = ETH_ALEN, - [ODP_ACTION_ATTR_SET_NW_SRC] = 4, - [ODP_ACTION_ATTR_SET_NW_DST] = 4, - [ODP_ACTION_ATTR_SET_NW_TOS] = 1, - [ODP_ACTION_ATTR_SET_TP_SRC] = 2, - [ODP_ACTION_ATTR_SET_TP_DST] = 2, - [ODP_ACTION_ATTR_SET_TUNNEL] = 8, - [ODP_ACTION_ATTR_SET_PRIORITY] = 4, - [ODP_ACTION_ATTR_POP_PRIORITY] = 0, + /* Expected argument lengths, (u32)-1 for variable length. */ + static const u32 action_lens[OVS_ACTION_ATTR_MAX + 1] = { + [OVS_ACTION_ATTR_OUTPUT] = sizeof(u32), + [OVS_ACTION_ATTR_USERSPACE] = (u32)-1, + [OVS_ACTION_ATTR_PUSH_VLAN] = sizeof(struct ovs_action_push_vlan), + [OVS_ACTION_ATTR_POP_VLAN] = 0, + [OVS_ACTION_ATTR_SET] = (u32)-1, + [OVS_ACTION_ATTR_SAMPLE] = (u32)-1 }; + const struct ovs_action_push_vlan *vlan; int type = nla_type(a); - if (type > ODP_ACTION_ATTR_MAX || nla_len(a) != action_lens[type]) + if (type > OVS_ACTION_ATTR_MAX || + (action_lens[type] != nla_len(a) && + action_lens[type] != (u32)-1)) return -EINVAL; switch (type) { - case ODP_ACTION_ATTR_UNSPEC: + case OVS_ACTION_ATTR_UNSPEC: return -EINVAL; - case ODP_ACTION_ATTR_USERSPACE: - case ODP_ACTION_ATTR_STRIP_VLAN: - case ODP_ACTION_ATTR_SET_DL_SRC: - case ODP_ACTION_ATTR_SET_DL_DST: - case ODP_ACTION_ATTR_SET_NW_SRC: - case ODP_ACTION_ATTR_SET_NW_DST: - case ODP_ACTION_ATTR_SET_TP_SRC: - case ODP_ACTION_ATTR_SET_TP_DST: - case ODP_ACTION_ATTR_SET_TUNNEL: - case ODP_ACTION_ATTR_SET_PRIORITY: - case ODP_ACTION_ATTR_POP_PRIORITY: - /* No validation needed. */ + case OVS_ACTION_ATTR_USERSPACE: + err = validate_userspace(a); + if (err) + return err; break; - case ODP_ACTION_ATTR_OUTPUT: + case OVS_ACTION_ATTR_OUTPUT: if (nla_get_u32(a) >= DP_MAX_PORTS) return -EINVAL; break; - case ODP_ACTION_ATTR_SET_DL_TCI: - if (nla_get_be16(a) & htons(VLAN_CFI_MASK)) - return -EINVAL; + + case OVS_ACTION_ATTR_POP_VLAN: break; - case ODP_ACTION_ATTR_SET_NW_TOS: - if (nla_get_u8(a) & INET_ECN_MASK) + case OVS_ACTION_ATTR_PUSH_VLAN: + vlan = nla_data(a); + if (vlan->vlan_tpid != htons(ETH_P_8021Q)) return -EINVAL; + if (!(vlan->vlan_tci & htons(VLAN_TAG_PRESENT))) + return -EINVAL; + break; + + case OVS_ACTION_ATTR_SET: + err = validate_set(a, key); + if (err) + return err; + break; + + case OVS_ACTION_ATTR_SAMPLE: + err = validate_sample(a, key, depth); + if (err) + return err; break; default: - return -EOPNOTSUPP; + return -EINVAL; } } @@ -614,6 +655,7 @@ static int validate_actions(const struct nlattr *attr) return 0; } + static void clear_stats(struct sw_flow *flow) { flow->used = 0; @@ -622,54 +664,33 @@ static void clear_stats(struct sw_flow *flow) flow->byte_count = 0; } -/* Called with genl_mutex. */ -static int expand_table(struct datapath *dp) -{ - struct tbl *old_table = get_table_protected(dp); - struct tbl *new_table; - - new_table = tbl_expand(old_table); - if (IS_ERR(new_table)) - return PTR_ERR(new_table); - - rcu_assign_pointer(dp->table, new_table); - tbl_deferred_destroy(old_table, NULL); - - return 0; -} - -static int odp_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) +static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) { - struct odp_header *odp_header = info->userhdr; + struct ovs_header *ovs_header = info->userhdr; struct nlattr **a = info->attrs; struct sw_flow_actions *acts; struct sk_buff *packet; struct sw_flow *flow; struct datapath *dp; struct ethhdr *eth; - bool is_frag; int len; int err; int key_len; err = -EINVAL; - if (!a[ODP_PACKET_ATTR_PACKET] || !a[ODP_PACKET_ATTR_KEY] || - !a[ODP_PACKET_ATTR_ACTIONS] || - nla_len(a[ODP_PACKET_ATTR_PACKET]) < ETH_HLEN) + if (!a[OVS_PACKET_ATTR_PACKET] || !a[OVS_PACKET_ATTR_KEY] || + !a[OVS_PACKET_ATTR_ACTIONS] || + nla_len(a[OVS_PACKET_ATTR_PACKET]) < ETH_HLEN) goto err; - err = validate_actions(a[ODP_PACKET_ATTR_ACTIONS]); - if (err) - goto err; - - len = nla_len(a[ODP_PACKET_ATTR_PACKET]); + len = nla_len(a[OVS_PACKET_ATTR_PACKET]); packet = __dev_alloc_skb(NET_IP_ALIGN + len, GFP_KERNEL); err = -ENOMEM; if (!packet) goto err; skb_reserve(packet, NET_IP_ALIGN); - memcpy(__skb_put(packet, len), nla_data(a[ODP_PACKET_ATTR_PACKET]), len); + memcpy(__skb_put(packet, len), nla_data(a[OVS_PACKET_ATTR_PACKET]), len); skb_reset_mac_header(packet); eth = eth_hdr(packet); @@ -683,161 +704,125 @@ static int odp_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) packet->protocol = htons(ETH_P_802_2); /* Build an sw_flow for sending this packet. */ - flow = flow_alloc(); + flow = ovs_flow_alloc(); err = PTR_ERR(flow); if (IS_ERR(flow)) goto err_kfree_skb; - err = flow_extract(packet, -1, &flow->key, &key_len, &is_frag); + err = ovs_flow_extract(packet, -1, &flow->key, &key_len); if (err) - goto err_flow_put; - flow->tbl_node.hash = flow_hash(&flow->key, key_len); + goto err_flow_free; - err = flow_metadata_from_nlattrs(&flow->key.eth.in_port, - &flow->key.eth.tun_id, - a[ODP_PACKET_ATTR_KEY]); + err = ovs_flow_metadata_from_nlattrs(flow, key_len, a[OVS_PACKET_ATTR_KEY]); if (err) - goto err_flow_put; + goto err_flow_free; - acts = flow_actions_alloc(a[ODP_PACKET_ATTR_ACTIONS]); + err = validate_actions(a[OVS_PACKET_ATTR_ACTIONS], &flow->key, 0); + if (err) + goto err_flow_free; + + acts = ovs_flow_actions_alloc(a[OVS_PACKET_ATTR_ACTIONS]); err = PTR_ERR(acts); if (IS_ERR(acts)) - goto err_flow_put; + goto err_flow_free; rcu_assign_pointer(flow->sf_acts, acts); OVS_CB(packet)->flow = flow; + packet->priority = flow->key.phy.priority; + skb_set_mark(packet, flow->key.phy.skb_mark); rcu_read_lock(); - dp = get_dp(odp_header->dp_ifindex); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); err = -ENODEV; if (!dp) goto err_unlock; - err = execute_actions(dp, packet); + + local_bh_disable(); + err = ovs_execute_actions(dp, packet); + local_bh_enable(); rcu_read_unlock(); - flow_put(flow); + ovs_flow_free(flow); return err; err_unlock: rcu_read_unlock(); -err_flow_put: - flow_put(flow); +err_flow_free: + ovs_flow_free(flow); err_kfree_skb: kfree_skb(packet); err: return err; } -static const struct nla_policy packet_policy[ODP_PACKET_ATTR_MAX + 1] = { - [ODP_PACKET_ATTR_PACKET] = { .type = NLA_UNSPEC }, - [ODP_PACKET_ATTR_KEY] = { .type = NLA_NESTED }, - [ODP_PACKET_ATTR_ACTIONS] = { .type = NLA_NESTED }, +static const struct nla_policy packet_policy[OVS_PACKET_ATTR_MAX + 1] = { + [OVS_PACKET_ATTR_PACKET] = { .type = NLA_UNSPEC }, + [OVS_PACKET_ATTR_KEY] = { .type = NLA_NESTED }, + [OVS_PACKET_ATTR_ACTIONS] = { .type = NLA_NESTED }, }; static struct genl_ops dp_packet_genl_ops[] = { - { .cmd = ODP_PACKET_CMD_EXECUTE, + { .cmd = OVS_PACKET_CMD_EXECUTE, .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ .policy = packet_policy, - .doit = odp_packet_cmd_execute + .doit = ovs_packet_cmd_execute } }; -static void get_dp_stats(struct datapath *dp, struct odp_stats *stats) +static void get_dp_stats(struct datapath *dp, struct ovs_dp_stats *stats) { int i; + struct flow_table *table = genl_dereference(dp->table); + + stats->n_flows = ovs_flow_tbl_count(table); - stats->n_frags = stats->n_hit = stats->n_missed = stats->n_lost = 0; + stats->n_hit = stats->n_missed = stats->n_lost = 0; for_each_possible_cpu(i) { const struct dp_stats_percpu *percpu_stats; struct dp_stats_percpu local_stats; - unsigned seqcount; + unsigned int start; percpu_stats = per_cpu_ptr(dp->stats_percpu, i); do { - seqcount = read_seqcount_begin(&percpu_stats->seqlock); + start = u64_stats_fetch_begin_bh(&percpu_stats->sync); local_stats = *percpu_stats; - } while (read_seqcount_retry(&percpu_stats->seqlock, seqcount)); + } while (u64_stats_fetch_retry_bh(&percpu_stats->sync, start)); - stats->n_frags += local_stats.n_frags; stats->n_hit += local_stats.n_hit; stats->n_missed += local_stats.n_missed; stats->n_lost += local_stats.n_lost; } } -/* MTU of the dp pseudo-device: ETH_DATA_LEN or the minimum of the ports. - * Called with RTNL lock. - */ -int dp_min_mtu(const struct datapath *dp) -{ - struct vport *p; - int mtu = 0; - - ASSERT_RTNL(); - - list_for_each_entry (p, &dp->port_list, node) { - int dev_mtu; - - /* Skip any internal ports, since that's what we're trying to - * set. */ - if (is_internal_vport(p)) - continue; - - dev_mtu = vport_get_mtu(p); - if (!dev_mtu) - continue; - if (!mtu || dev_mtu < mtu) - mtu = dev_mtu; - } - - return mtu ? mtu : ETH_DATA_LEN; -} - -/* Sets the MTU of all datapath devices to the minimum of the ports - * Called with RTNL lock. - */ -void set_internal_devs_mtu(const struct datapath *dp) -{ - struct vport *p; - int mtu; - - ASSERT_RTNL(); - - mtu = dp_min_mtu(dp); - - list_for_each_entry (p, &dp->port_list, node) { - if (is_internal_vport(p)) - vport_set_mtu(p, mtu); - } -} - -static const struct nla_policy flow_policy[ODP_FLOW_ATTR_MAX + 1] = { - [ODP_FLOW_ATTR_KEY] = { .type = NLA_NESTED }, - [ODP_FLOW_ATTR_ACTIONS] = { .type = NLA_NESTED }, - [ODP_FLOW_ATTR_CLEAR] = { .type = NLA_FLAG }, +static const struct nla_policy flow_policy[OVS_FLOW_ATTR_MAX + 1] = { + [OVS_FLOW_ATTR_KEY] = { .type = NLA_NESTED }, + [OVS_FLOW_ATTR_ACTIONS] = { .type = NLA_NESTED }, + [OVS_FLOW_ATTR_CLEAR] = { .type = NLA_FLAG }, }; static struct genl_family dp_flow_genl_family = { .id = GENL_ID_GENERATE, - .hdrsize = sizeof(struct odp_header), - .name = ODP_FLOW_FAMILY, - .version = 1, - .maxattr = ODP_FLOW_ATTR_MAX + .hdrsize = sizeof(struct ovs_header), + .name = OVS_FLOW_FAMILY, + .version = OVS_FLOW_VERSION, + .maxattr = OVS_FLOW_ATTR_MAX, + SET_NETNSOK }; -static struct genl_multicast_group dp_flow_multicast_group = { - .name = ODP_FLOW_MCGROUP +static struct genl_multicast_group ovs_dp_flow_multicast_group = { + .name = OVS_FLOW_MCGROUP }; /* Called with genl_lock. */ -static int odp_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp, - struct sk_buff *skb, u32 pid, u32 seq, u32 flags, u8 cmd) +static int ovs_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp, + struct sk_buff *skb, u32 portid, + u32 seq, u32 flags, u8 cmd) { const int skb_orig_len = skb->len; const struct sw_flow_actions *sf_acts; - struct odp_flow_stats stats; - struct odp_header *odp_header; + struct ovs_flow_stats stats; + struct ovs_header *ovs_header; struct nlattr *nla; unsigned long used; u8 tcp_flags; @@ -846,16 +831,16 @@ static int odp_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp, sf_acts = rcu_dereference_protected(flow->sf_acts, lockdep_genl_is_held()); - odp_header = genlmsg_put(skb, pid, seq, &dp_flow_genl_family, flags, cmd); - if (!odp_header) + ovs_header = genlmsg_put(skb, portid, seq, &dp_flow_genl_family, flags, cmd); + if (!ovs_header) return -EMSGSIZE; - odp_header->dp_ifindex = dp->dp_ifindex; + ovs_header->dp_ifindex = get_dpifindex(dp); - nla = nla_nest_start(skb, ODP_FLOW_ATTR_KEY); + nla = nla_nest_start(skb, OVS_FLOW_ATTR_KEY); if (!nla) goto nla_put_failure; - err = flow_to_nlattrs(&flow->key, skb); + err = ovs_flow_to_nlattrs(&flow->key, skb); if (err) goto error; nla_nest_end(skb, nla); @@ -867,16 +852,20 @@ static int odp_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp, tcp_flags = flow->tcp_flags; spin_unlock_bh(&flow->lock); - if (used) - NLA_PUT_U64(skb, ODP_FLOW_ATTR_USED, flow_used_time(used)); + if (used && + nla_put_u64(skb, OVS_FLOW_ATTR_USED, ovs_flow_used_time(used))) + goto nla_put_failure; - if (stats.n_packets) - NLA_PUT(skb, ODP_FLOW_ATTR_STATS, sizeof(struct odp_flow_stats), &stats); + if (stats.n_packets && + nla_put(skb, OVS_FLOW_ATTR_STATS, + sizeof(struct ovs_flow_stats), &stats)) + goto nla_put_failure; - if (tcp_flags) - NLA_PUT_U8(skb, ODP_FLOW_ATTR_TCP_FLAGS, tcp_flags); + if (tcp_flags && + nla_put_u8(skb, OVS_FLOW_ATTR_TCP_FLAGS, tcp_flags)) + goto nla_put_failure; - /* If ODP_FLOW_ATTR_ACTIONS doesn't fit, skip dumping the actions if + /* If OVS_FLOW_ATTR_ACTIONS doesn't fit, skip dumping the actions if * this is the first flow to be dumped into 'skb'. This is unusual for * Netlink but individual action lists can be longer than * NLMSG_GOODSIZE and thus entirely undumpable if we didn't do this. @@ -886,21 +875,21 @@ static int odp_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp, * This can only fail for dump operations because the skb is always * properly sized for single flows. */ - err = nla_put(skb, ODP_FLOW_ATTR_ACTIONS, sf_acts->actions_len, + err = nla_put(skb, OVS_FLOW_ATTR_ACTIONS, sf_acts->actions_len, sf_acts->actions); if (err < 0 && skb_orig_len) goto error; - return genlmsg_end(skb, odp_header); + return genlmsg_end(skb, ovs_header); nla_put_failure: err = -EMSGSIZE; error: - genlmsg_cancel(skb, odp_header); + genlmsg_cancel(skb, ovs_header); return err; } -static struct sk_buff *odp_flow_cmd_alloc_info(struct sw_flow *flow) +static struct sk_buff *ovs_flow_cmd_alloc_info(struct sw_flow *flow) { const struct sw_flow_actions *sf_acts; int len; @@ -908,111 +897,120 @@ static struct sk_buff *odp_flow_cmd_alloc_info(struct sw_flow *flow) sf_acts = rcu_dereference_protected(flow->sf_acts, lockdep_genl_is_held()); - len = nla_total_size(FLOW_BUFSIZE); /* ODP_FLOW_ATTR_KEY */ - len += nla_total_size(sf_acts->actions_len); /* ODP_FLOW_ATTR_ACTIONS */ - len += nla_total_size(sizeof(struct odp_flow_stats)); /* ODP_FLOW_ATTR_STATS */ - len += nla_total_size(1); /* ODP_FLOW_ATTR_TCP_FLAGS */ - len += nla_total_size(8); /* ODP_FLOW_ATTR_USED */ - return genlmsg_new(NLMSG_ALIGN(sizeof(struct odp_header)) + len, GFP_KERNEL); + /* OVS_FLOW_ATTR_KEY */ + len = nla_total_size(FLOW_BUFSIZE); + /* OVS_FLOW_ATTR_ACTIONS */ + len += nla_total_size(sf_acts->actions_len); + /* OVS_FLOW_ATTR_STATS */ + len += nla_total_size(sizeof(struct ovs_flow_stats)); + /* OVS_FLOW_ATTR_TCP_FLAGS */ + len += nla_total_size(1); + /* OVS_FLOW_ATTR_USED */ + len += nla_total_size(8); + + len += NLMSG_ALIGN(sizeof(struct ovs_header)); + + return genlmsg_new(len, GFP_KERNEL); } -static struct sk_buff *odp_flow_cmd_build_info(struct sw_flow *flow, struct datapath *dp, - u32 pid, u32 seq, u8 cmd) +static struct sk_buff *ovs_flow_cmd_build_info(struct sw_flow *flow, + struct datapath *dp, + u32 portid, u32 seq, u8 cmd) { struct sk_buff *skb; int retval; - skb = odp_flow_cmd_alloc_info(flow); + skb = ovs_flow_cmd_alloc_info(flow); if (!skb) return ERR_PTR(-ENOMEM); - retval = odp_flow_cmd_fill_info(flow, dp, skb, pid, seq, 0, cmd); + retval = ovs_flow_cmd_fill_info(flow, dp, skb, portid, seq, 0, cmd); BUG_ON(retval < 0); return skb; } -static int odp_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) +static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) { struct nlattr **a = info->attrs; - struct odp_header *odp_header = info->userhdr; - struct tbl_node *flow_node; + struct ovs_header *ovs_header = info->userhdr; struct sw_flow_key key; struct sw_flow *flow; struct sk_buff *reply; struct datapath *dp; - struct tbl *table; - u32 hash; + struct flow_table *table; int error; int key_len; /* Extract key. */ error = -EINVAL; - if (!a[ODP_FLOW_ATTR_KEY]) + if (!a[OVS_FLOW_ATTR_KEY]) goto error; - error = flow_from_nlattrs(&key, &key_len, a[ODP_FLOW_ATTR_KEY]); + error = ovs_flow_from_nlattrs(&key, &key_len, a[OVS_FLOW_ATTR_KEY]); if (error) goto error; /* Validate actions. */ - if (a[ODP_FLOW_ATTR_ACTIONS]) { - error = validate_actions(a[ODP_FLOW_ATTR_ACTIONS]); + if (a[OVS_FLOW_ATTR_ACTIONS]) { + error = validate_actions(a[OVS_FLOW_ATTR_ACTIONS], &key, 0); if (error) goto error; - } else if (info->genlhdr->cmd == ODP_FLOW_CMD_NEW) { + } else if (info->genlhdr->cmd == OVS_FLOW_CMD_NEW) { error = -EINVAL; goto error; } - dp = get_dp(odp_header->dp_ifindex); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); error = -ENODEV; if (!dp) goto error; - hash = flow_hash(&key, key_len); - table = get_table_protected(dp); - flow_node = tbl_lookup(table, &key, key_len, hash, flow_cmp); - if (!flow_node) { + table = genl_dereference(dp->table); + flow = ovs_flow_tbl_lookup(table, &key, key_len); + if (!flow) { struct sw_flow_actions *acts; /* Bail out if we're not allowed to create a new flow. */ error = -ENOENT; - if (info->genlhdr->cmd == ODP_FLOW_CMD_SET) + if (info->genlhdr->cmd == OVS_FLOW_CMD_SET) goto error; /* Expand table, if necessary, to make room. */ - if (tbl_count(table) >= tbl_n_buckets(table)) { - error = expand_table(dp); - if (error) - goto error; - table = get_table_protected(dp); + if (ovs_flow_tbl_need_to_expand(table)) { + struct flow_table *new_table; + + new_table = ovs_flow_tbl_expand(table); + if (!IS_ERR(new_table)) { + rcu_assign_pointer(dp->table, new_table); + ovs_flow_tbl_deferred_destroy(table); + table = genl_dereference(dp->table); + } } /* Allocate flow. */ - flow = flow_alloc(); + flow = ovs_flow_alloc(); if (IS_ERR(flow)) { error = PTR_ERR(flow); goto error; } - flow->key = key; clear_stats(flow); /* Obtain actions. */ - acts = flow_actions_alloc(a[ODP_FLOW_ATTR_ACTIONS]); + acts = ovs_flow_actions_alloc(a[OVS_FLOW_ATTR_ACTIONS]); error = PTR_ERR(acts); if (IS_ERR(acts)) goto error_free_flow; rcu_assign_pointer(flow->sf_acts, acts); /* Put flow in bucket. */ - error = tbl_insert(table, &flow->tbl_node, hash); - if (error) - goto error_free_flow; + ovs_flow_tbl_insert(table, flow, &key, key_len); - reply = odp_flow_cmd_build_info(flow, dp, info->snd_pid, - info->snd_seq, ODP_FLOW_CMD_NEW); + reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid, + info->snd_seq, + OVS_FLOW_CMD_NEW); } else { /* We found a matching flow. */ struct sw_flow_actions *old_acts; + struct nlattr *acts_attrs; /* Bail out if we're not allowed to modify an existing flow. * We accept NLM_F_CREATE in place of the intended NLM_F_EXCL @@ -1021,34 +1019,34 @@ static int odp_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) * gets fixed. */ error = -EEXIST; - if (info->genlhdr->cmd == ODP_FLOW_CMD_NEW && + if (info->genlhdr->cmd == OVS_FLOW_CMD_NEW && info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) goto error; /* Update actions. */ - flow = flow_cast(flow_node); old_acts = rcu_dereference_protected(flow->sf_acts, lockdep_genl_is_held()); - if (a[ODP_FLOW_ATTR_ACTIONS] && - (old_acts->actions_len != nla_len(a[ODP_FLOW_ATTR_ACTIONS]) || - memcmp(old_acts->actions, nla_data(a[ODP_FLOW_ATTR_ACTIONS]), - old_acts->actions_len))) { + acts_attrs = a[OVS_FLOW_ATTR_ACTIONS]; + if (acts_attrs && + (old_acts->actions_len != nla_len(acts_attrs) || + memcmp(old_acts->actions, nla_data(acts_attrs), + old_acts->actions_len))) { struct sw_flow_actions *new_acts; - new_acts = flow_actions_alloc(a[ODP_FLOW_ATTR_ACTIONS]); + new_acts = ovs_flow_actions_alloc(acts_attrs); error = PTR_ERR(new_acts); if (IS_ERR(new_acts)) goto error; rcu_assign_pointer(flow->sf_acts, new_acts); - flow_deferred_free_acts(old_acts); + ovs_flow_deferred_free_acts(old_acts); } - reply = odp_flow_cmd_build_info(flow, dp, info->snd_pid, - info->snd_seq, ODP_FLOW_CMD_NEW); + reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid, + info->snd_seq, OVS_FLOW_CMD_NEW); /* Clear stats. */ - if (a[ODP_FLOW_ATTR_CLEAR]) { + if (a[OVS_FLOW_ATTR_CLEAR]) { spin_lock_bh(&flow->lock); clear_stats(flow); spin_unlock_bh(&flow->lock); @@ -1056,131 +1054,126 @@ static int odp_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) } if (!IS_ERR(reply)) - genl_notify(reply, genl_info_net(info), info->snd_pid, - dp_flow_multicast_group.id, info->nlhdr, GFP_KERNEL); + genl_notify(reply, genl_info_net(info), info->snd_portid, + ovs_dp_flow_multicast_group.id, info->nlhdr, + GFP_KERNEL); else - netlink_set_err(INIT_NET_GENL_SOCK, 0, - dp_flow_multicast_group.id, PTR_ERR(reply)); + netlink_set_err(GENL_SOCK(sock_net(skb->sk)), 0, + ovs_dp_flow_multicast_group.id, PTR_ERR(reply)); return 0; error_free_flow: - flow_put(flow); + ovs_flow_free(flow); error: return error; } -static int odp_flow_cmd_get(struct sk_buff *skb, struct genl_info *info) +static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info) { struct nlattr **a = info->attrs; - struct odp_header *odp_header = info->userhdr; + struct ovs_header *ovs_header = info->userhdr; struct sw_flow_key key; - struct tbl_node *flow_node; struct sk_buff *reply; struct sw_flow *flow; struct datapath *dp; - struct tbl *table; + struct flow_table *table; int err; int key_len; - if (!a[ODP_FLOW_ATTR_KEY]) + if (!a[OVS_FLOW_ATTR_KEY]) return -EINVAL; - err = flow_from_nlattrs(&key, &key_len, a[ODP_FLOW_ATTR_KEY]); + err = ovs_flow_from_nlattrs(&key, &key_len, a[OVS_FLOW_ATTR_KEY]); if (err) return err; - dp = get_dp(odp_header->dp_ifindex); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); if (!dp) return -ENODEV; - table = get_table_protected(dp); - flow_node = tbl_lookup(table, &key, key_len, flow_hash(&key, key_len), - flow_cmp); - if (!flow_node) + table = genl_dereference(dp->table); + flow = ovs_flow_tbl_lookup(table, &key, key_len); + if (!flow) return -ENOENT; - flow = flow_cast(flow_node); - reply = odp_flow_cmd_build_info(flow, dp, info->snd_pid, info->snd_seq, ODP_FLOW_CMD_NEW); + reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid, + info->snd_seq, OVS_FLOW_CMD_NEW); if (IS_ERR(reply)) return PTR_ERR(reply); return genlmsg_reply(reply, info); } -static int odp_flow_cmd_del(struct sk_buff *skb, struct genl_info *info) +static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info) { struct nlattr **a = info->attrs; - struct odp_header *odp_header = info->userhdr; + struct ovs_header *ovs_header = info->userhdr; struct sw_flow_key key; - struct tbl_node *flow_node; struct sk_buff *reply; struct sw_flow *flow; struct datapath *dp; - struct tbl *table; + struct flow_table *table; int err; int key_len; - if (!a[ODP_FLOW_ATTR_KEY]) - return flush_flows(odp_header->dp_ifindex); - err = flow_from_nlattrs(&key, &key_len, a[ODP_FLOW_ATTR_KEY]); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); + if (!dp) + return -ENODEV; + + if (!a[OVS_FLOW_ATTR_KEY]) + return flush_flows(dp); + + err = ovs_flow_from_nlattrs(&key, &key_len, a[OVS_FLOW_ATTR_KEY]); if (err) return err; - dp = get_dp(odp_header->dp_ifindex); - if (!dp) - return -ENODEV; - - table = get_table_protected(dp); - flow_node = tbl_lookup(table, &key, key_len, flow_hash(&key, key_len), - flow_cmp); - if (!flow_node) + table = genl_dereference(dp->table); + flow = ovs_flow_tbl_lookup(table, &key, key_len); + if (!flow) return -ENOENT; - flow = flow_cast(flow_node); - reply = odp_flow_cmd_alloc_info(flow); + reply = ovs_flow_cmd_alloc_info(flow); if (!reply) return -ENOMEM; - err = tbl_remove(table, flow_node); - if (err) { - kfree_skb(reply); - return err; - } + ovs_flow_tbl_remove(table, flow); - err = odp_flow_cmd_fill_info(flow, dp, reply, info->snd_pid, - info->snd_seq, 0, ODP_FLOW_CMD_DEL); + err = ovs_flow_cmd_fill_info(flow, dp, reply, info->snd_portid, + info->snd_seq, 0, OVS_FLOW_CMD_DEL); BUG_ON(err < 0); - flow_deferred_free(flow); + ovs_flow_deferred_free(flow); - genl_notify(reply, genl_info_net(info), info->snd_pid, - dp_flow_multicast_group.id, info->nlhdr, GFP_KERNEL); + genl_notify(reply, genl_info_net(info), info->snd_portid, + ovs_dp_flow_multicast_group.id, info->nlhdr, GFP_KERNEL); return 0; } -static int odp_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) +static int ovs_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) { - struct odp_header *odp_header = genlmsg_data(nlmsg_data(cb->nlh)); + struct ovs_header *ovs_header = genlmsg_data(nlmsg_data(cb->nlh)); struct datapath *dp; + struct flow_table *table; - dp = get_dp(odp_header->dp_ifindex); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); if (!dp) return -ENODEV; + table = genl_dereference(dp->table); + for (;;) { - struct tbl_node *flow_node; struct sw_flow *flow; u32 bucket, obj; bucket = cb->args[0]; obj = cb->args[1]; - flow_node = tbl_next(get_table_protected(dp), &bucket, &obj); - if (!flow_node) + flow = ovs_flow_tbl_next(table, &bucket, &obj); + if (!flow) break; - flow = flow_cast(flow_node); - if (odp_flow_cmd_fill_info(flow, dp, skb, NETLINK_CB(cb->skb).pid, + if (ovs_flow_cmd_fill_info(flow, dp, skb, + NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NLM_F_MULTI, - ODP_FLOW_CMD_NEW) < 0) + OVS_FLOW_CMD_NEW) < 0) break; cb->args[0] = bucket; @@ -1190,97 +1183,82 @@ static int odp_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) } static struct genl_ops dp_flow_genl_ops[] = { - { .cmd = ODP_FLOW_CMD_NEW, + { .cmd = OVS_FLOW_CMD_NEW, .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ .policy = flow_policy, - .doit = odp_flow_cmd_new_or_set + .doit = ovs_flow_cmd_new_or_set }, - { .cmd = ODP_FLOW_CMD_DEL, + { .cmd = OVS_FLOW_CMD_DEL, .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ .policy = flow_policy, - .doit = odp_flow_cmd_del + .doit = ovs_flow_cmd_del }, - { .cmd = ODP_FLOW_CMD_GET, + { .cmd = OVS_FLOW_CMD_GET, .flags = 0, /* OK for unprivileged users. */ .policy = flow_policy, - .doit = odp_flow_cmd_get, - .dumpit = odp_flow_cmd_dump + .doit = ovs_flow_cmd_get, + .dumpit = ovs_flow_cmd_dump }, - { .cmd = ODP_FLOW_CMD_SET, + { .cmd = OVS_FLOW_CMD_SET, .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ .policy = flow_policy, - .doit = odp_flow_cmd_new_or_set, + .doit = ovs_flow_cmd_new_or_set, }, }; -static const struct nla_policy datapath_policy[ODP_DP_ATTR_MAX + 1] = { +static const struct nla_policy datapath_policy[OVS_DP_ATTR_MAX + 1] = { #ifdef HAVE_NLA_NUL_STRING - [ODP_DP_ATTR_NAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, + [OVS_DP_ATTR_NAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, #endif - [ODP_DP_ATTR_IPV4_FRAGS] = { .type = NLA_U32 }, - [ODP_DP_ATTR_SAMPLING] = { .type = NLA_U32 }, + [OVS_DP_ATTR_UPCALL_PID] = { .type = NLA_U32 }, }; static struct genl_family dp_datapath_genl_family = { .id = GENL_ID_GENERATE, - .hdrsize = sizeof(struct odp_header), - .name = ODP_DATAPATH_FAMILY, - .version = 1, - .maxattr = ODP_DP_ATTR_MAX + .hdrsize = sizeof(struct ovs_header), + .name = OVS_DATAPATH_FAMILY, + .version = OVS_DATAPATH_VERSION, + .maxattr = OVS_DP_ATTR_MAX, + SET_NETNSOK }; -static struct genl_multicast_group dp_datapath_multicast_group = { - .name = ODP_DATAPATH_MCGROUP +static struct genl_multicast_group ovs_dp_datapath_multicast_group = { + .name = OVS_DATAPATH_MCGROUP }; -static int odp_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb, - u32 pid, u32 seq, u32 flags, u8 cmd) +static int ovs_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb, + u32 portid, u32 seq, u32 flags, u8 cmd) { - struct odp_header *odp_header; - struct nlattr *nla; + struct ovs_header *ovs_header; + struct ovs_dp_stats dp_stats; int err; - odp_header = genlmsg_put(skb, pid, seq, &dp_datapath_genl_family, + ovs_header = genlmsg_put(skb, portid, seq, &dp_datapath_genl_family, flags, cmd); - if (!odp_header) + if (!ovs_header) goto error; - odp_header->dp_ifindex = dp->dp_ifindex; + ovs_header->dp_ifindex = get_dpifindex(dp); rcu_read_lock(); - err = nla_put_string(skb, ODP_DP_ATTR_NAME, dp_name(dp)); + err = nla_put_string(skb, OVS_DP_ATTR_NAME, ovs_dp_name(dp)); rcu_read_unlock(); if (err) goto nla_put_failure; - nla = nla_reserve(skb, ODP_DP_ATTR_STATS, sizeof(struct odp_stats)); - if (!nla) - goto nla_put_failure; - get_dp_stats(dp, nla_data(nla)); - - NLA_PUT_U32(skb, ODP_DP_ATTR_IPV4_FRAGS, - dp->drop_frags ? ODP_DP_FRAG_DROP : ODP_DP_FRAG_ZERO); - - if (dp->sflow_probability) - NLA_PUT_U32(skb, ODP_DP_ATTR_SAMPLING, dp->sflow_probability); - - nla = nla_nest_start(skb, ODP_DP_ATTR_MCGROUPS); - if (!nla) + get_dp_stats(dp, &dp_stats); + if (nla_put(skb, OVS_DP_ATTR_STATS, sizeof(struct ovs_dp_stats), &dp_stats)) goto nla_put_failure; - NLA_PUT_U32(skb, ODP_PACKET_CMD_MISS, packet_mc_group(dp, ODP_PACKET_CMD_MISS)); - NLA_PUT_U32(skb, ODP_PACKET_CMD_ACTION, packet_mc_group(dp, ODP_PACKET_CMD_ACTION)); - NLA_PUT_U32(skb, ODP_PACKET_CMD_SAMPLE, packet_mc_group(dp, ODP_PACKET_CMD_SAMPLE)); - nla_nest_end(skb, nla); - return genlmsg_end(skb, odp_header); + return genlmsg_end(skb, ovs_header); nla_put_failure: - genlmsg_cancel(skb, odp_header); + genlmsg_cancel(skb, ovs_header); error: return -EMSGSIZE; } -static struct sk_buff *odp_dp_cmd_build_info(struct datapath *dp, u32 pid, +static struct sk_buff *ovs_dp_cmd_build_info(struct datapath *dp, u32 portid, u32 seq, u8 cmd) { struct sk_buff *skb; @@ -1290,7 +1268,7 @@ static struct sk_buff *odp_dp_cmd_build_info(struct datapath *dp, u32 pid, if (!skb) return ERR_PTR(-ENOMEM); - retval = odp_dp_cmd_fill_info(dp, skb, pid, seq, 0, cmd); + retval = ovs_dp_cmd_fill_info(dp, skb, portid, seq, 0, cmd); if (retval < 0) { kfree_skb(skb); return ERR_PTR(retval); @@ -1298,166 +1276,148 @@ static struct sk_buff *odp_dp_cmd_build_info(struct datapath *dp, u32 pid, return skb; } -static int odp_dp_cmd_validate(struct nlattr *a[ODP_DP_ATTR_MAX + 1]) +static int ovs_dp_cmd_validate(struct nlattr *a[OVS_DP_ATTR_MAX + 1]) { - if (a[ODP_DP_ATTR_IPV4_FRAGS]) { - u32 frags = nla_get_u32(a[ODP_DP_ATTR_IPV4_FRAGS]); - - if (frags != ODP_DP_FRAG_ZERO && frags != ODP_DP_FRAG_DROP) - return -EINVAL; - } - - return CHECK_NUL_STRING(a[ODP_DP_ATTR_NAME], IFNAMSIZ - 1); + return CHECK_NUL_STRING(a[OVS_DP_ATTR_NAME], IFNAMSIZ - 1); } /* Called with genl_mutex and optionally with RTNL lock also. */ -static struct datapath *lookup_datapath(struct odp_header *odp_header, struct nlattr *a[ODP_DP_ATTR_MAX + 1]) +static struct datapath *lookup_datapath(struct net *net, + struct ovs_header *ovs_header, + struct nlattr *a[OVS_DP_ATTR_MAX + 1]) { struct datapath *dp; - if (!a[ODP_DP_ATTR_NAME]) - dp = get_dp(odp_header->dp_ifindex); + if (!a[OVS_DP_ATTR_NAME]) + dp = get_dp(net, ovs_header->dp_ifindex); else { struct vport *vport; rcu_read_lock(); - vport = vport_locate(nla_data(a[ODP_DP_ATTR_NAME])); - dp = vport && vport->port_no == ODPP_LOCAL ? vport->dp : NULL; + vport = ovs_vport_locate(net, nla_data(a[OVS_DP_ATTR_NAME])); + dp = vport && vport->port_no == OVSP_LOCAL ? vport->dp : NULL; rcu_read_unlock(); } return dp ? dp : ERR_PTR(-ENODEV); } -/* Called with genl_mutex. */ -static void change_datapath(struct datapath *dp, struct nlattr *a[ODP_DP_ATTR_MAX + 1]) -{ - if (a[ODP_DP_ATTR_IPV4_FRAGS]) - dp->drop_frags = nla_get_u32(a[ODP_DP_ATTR_IPV4_FRAGS]) == ODP_DP_FRAG_DROP; - if (a[ODP_DP_ATTR_SAMPLING]) - dp->sflow_probability = nla_get_u32(a[ODP_DP_ATTR_SAMPLING]); -} - -static int odp_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) +static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) { struct nlattr **a = info->attrs; struct vport_parms parms; struct sk_buff *reply; struct datapath *dp; struct vport *vport; - int err; + struct ovs_net *ovs_net; + int err, i; err = -EINVAL; - if (!a[ODP_DP_ATTR_NAME]) + if (!a[OVS_DP_ATTR_NAME] || !a[OVS_DP_ATTR_UPCALL_PID]) goto err; - err = odp_dp_cmd_validate(a); + err = ovs_dp_cmd_validate(a); if (err) goto err; rtnl_lock(); - err = -ENODEV; - if (!try_module_get(THIS_MODULE)) - goto err_unlock_rtnl; err = -ENOMEM; dp = kzalloc(sizeof(*dp), GFP_KERNEL); if (dp == NULL) - goto err_put_module; - INIT_LIST_HEAD(&dp->port_list); + goto err_unlock_rtnl; - /* Initialize kobject for bridge. This will be added as - * /sys/class/net//brif later, if sysfs is enabled. */ - dp->ifobj.kset = NULL; - kobject_init(&dp->ifobj, &dp_ktype); + ovs_dp_set_net(dp, hold_net(sock_net(skb->sk))); /* Allocate table. */ err = -ENOMEM; - rcu_assign_pointer(dp->table, tbl_create(TBL_MIN_BUCKETS)); + rcu_assign_pointer(dp->table, ovs_flow_tbl_alloc(TBL_MIN_BUCKETS)); if (!dp->table) goto err_free_dp; + dp->stats_percpu = alloc_percpu(struct dp_stats_percpu); + if (!dp->stats_percpu) { + err = -ENOMEM; + goto err_destroy_table; + } + + dp->ports = kmalloc(DP_VPORT_HASH_BUCKETS * sizeof(struct hlist_head), + GFP_KERNEL); + if (!dp->ports) { + err = -ENOMEM; + goto err_destroy_percpu; + } + + for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) + INIT_HLIST_HEAD(&dp->ports[i]); + /* Set up our datapath device. */ - parms.name = nla_data(a[ODP_DP_ATTR_NAME]); - parms.type = ODP_VPORT_TYPE_INTERNAL; + parms.name = nla_data(a[OVS_DP_ATTR_NAME]); + parms.type = OVS_VPORT_TYPE_INTERNAL; parms.options = NULL; parms.dp = dp; - parms.port_no = ODPP_LOCAL; + parms.port_no = OVSP_LOCAL; + parms.upcall_portid = nla_get_u32(a[OVS_DP_ATTR_UPCALL_PID]); + vport = new_vport(&parms); if (IS_ERR(vport)) { err = PTR_ERR(vport); if (err == -EBUSY) err = -EEXIST; - goto err_destroy_table; + goto err_destroy_ports_array; } - dp->dp_ifindex = vport_get_ifindex(vport); - dp->drop_frags = 0; - dp->stats_percpu = alloc_percpu(struct dp_stats_percpu); - if (!dp->stats_percpu) { - err = -ENOMEM; - goto err_destroy_local_port; - } - - change_datapath(dp, a); - - reply = odp_dp_cmd_build_info(dp, info->snd_pid, info->snd_seq, ODP_DP_CMD_NEW); + reply = ovs_dp_cmd_build_info(dp, info->snd_portid, + info->snd_seq, OVS_DP_CMD_NEW); err = PTR_ERR(reply); if (IS_ERR(reply)) goto err_destroy_local_port; - list_add_tail(&dp->list_node, &dps); - dp_sysfs_add_dp(dp); + ovs_net = net_generic(ovs_dp_get_net(dp), ovs_net_id); + list_add_tail(&dp->list_node, &ovs_net->dps); rtnl_unlock(); - genl_notify(reply, genl_info_net(info), info->snd_pid, - dp_datapath_multicast_group.id, info->nlhdr, GFP_KERNEL); + genl_notify(reply, genl_info_net(info), info->snd_portid, + ovs_dp_datapath_multicast_group.id, info->nlhdr, + GFP_KERNEL); return 0; err_destroy_local_port: - dp_detach_port(get_vport_protected(dp, ODPP_LOCAL)); + ovs_dp_detach_port(ovs_vport_rtnl(dp, OVSP_LOCAL)); +err_destroy_ports_array: + kfree(dp->ports); +err_destroy_percpu: + free_percpu(dp->stats_percpu); err_destroy_table: - tbl_destroy(get_table_protected(dp), NULL); + ovs_flow_tbl_destroy(genl_dereference(dp->table)); err_free_dp: + release_net(ovs_dp_get_net(dp)); kfree(dp); -err_put_module: - module_put(THIS_MODULE); err_unlock_rtnl: rtnl_unlock(); err: return err; } -static int odp_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) +/* Called with genl_mutex. */ +static void __dp_destroy(struct datapath *dp) { - struct vport *vport, *next_vport; - struct sk_buff *reply; - struct datapath *dp; - int err; - - err = odp_dp_cmd_validate(info->attrs); - if (err) - goto exit; + int i; rtnl_lock(); - dp = lookup_datapath(info->userhdr, info->attrs); - err = PTR_ERR(dp); - if (IS_ERR(dp)) - goto exit_unlock; - reply = odp_dp_cmd_build_info(dp, info->snd_pid, info->snd_seq, ODP_DP_CMD_DEL); - err = PTR_ERR(reply); - if (IS_ERR(reply)) - goto exit_unlock; + for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) { + struct vport *vport; + struct hlist_node *node, *n; - list_for_each_entry_safe (vport, next_vport, &dp->port_list, node) - if (vport->port_no != ODPP_LOCAL) - dp_detach_port(vport); + hlist_for_each_entry_safe(vport, node, n, &dp->ports[i], dp_hash_node) + if (vport->port_no != OVSP_LOCAL) + ovs_dp_detach_port(vport); + } - dp_sysfs_del_dp(dp); list_del(&dp->list_node); - dp_detach_port(get_vport_protected(dp, ODPP_LOCAL)); + ovs_dp_detach_port(ovs_vport_rtnl(dp, OVSP_LOCAL)); /* rtnl_unlock() will wait until all the references to devices that * are pending unregistration have been dropped. We do it here to @@ -1467,81 +1427,102 @@ static int odp_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) rtnl_unlock(); call_rcu(&dp->rcu, destroy_dp_rcu); - module_put(THIS_MODULE); +} - genl_notify(reply, genl_info_net(info), info->snd_pid, - dp_datapath_multicast_group.id, info->nlhdr, GFP_KERNEL); +static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) +{ + struct sk_buff *reply; + struct datapath *dp; + int err; - return 0; + err = ovs_dp_cmd_validate(info->attrs); + if (err) + return err; -exit_unlock: - rtnl_unlock(); -exit: - return err; + dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); + err = PTR_ERR(dp); + if (IS_ERR(dp)) + return err; + + reply = ovs_dp_cmd_build_info(dp, info->snd_portid, + info->snd_seq, OVS_DP_CMD_DEL); + err = PTR_ERR(reply); + if (IS_ERR(reply)) + return err; + + __dp_destroy(dp); + + genl_notify(reply, genl_info_net(info), info->snd_portid, + ovs_dp_datapath_multicast_group.id, info->nlhdr, + GFP_KERNEL); + + return 0; } -static int odp_dp_cmd_set(struct sk_buff *skb, struct genl_info *info) +static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info) { struct sk_buff *reply; struct datapath *dp; int err; - err = odp_dp_cmd_validate(info->attrs); + err = ovs_dp_cmd_validate(info->attrs); if (err) return err; - dp = lookup_datapath(info->userhdr, info->attrs); + dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); if (IS_ERR(dp)) return PTR_ERR(dp); - change_datapath(dp, info->attrs); - - reply = odp_dp_cmd_build_info(dp, info->snd_pid, info->snd_seq, ODP_DP_CMD_NEW); + reply = ovs_dp_cmd_build_info(dp, info->snd_portid, + info->snd_seq, OVS_DP_CMD_NEW); if (IS_ERR(reply)) { err = PTR_ERR(reply); - netlink_set_err(INIT_NET_GENL_SOCK, 0, - dp_datapath_multicast_group.id, err); + netlink_set_err(GENL_SOCK(sock_net(skb->sk)), 0, + ovs_dp_datapath_multicast_group.id, err); return 0; } - genl_notify(reply, genl_info_net(info), info->snd_pid, - dp_datapath_multicast_group.id, info->nlhdr, GFP_KERNEL); + genl_notify(reply, genl_info_net(info), info->snd_portid, + ovs_dp_datapath_multicast_group.id, info->nlhdr, + GFP_KERNEL); + return 0; } -static int odp_dp_cmd_get(struct sk_buff *skb, struct genl_info *info) +static int ovs_dp_cmd_get(struct sk_buff *skb, struct genl_info *info) { struct sk_buff *reply; struct datapath *dp; int err; - err = odp_dp_cmd_validate(info->attrs); + err = ovs_dp_cmd_validate(info->attrs); if (err) return err; - dp = lookup_datapath(info->userhdr, info->attrs); + dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); if (IS_ERR(dp)) return PTR_ERR(dp); - reply = odp_dp_cmd_build_info(dp, info->snd_pid, info->snd_seq, ODP_DP_CMD_NEW); + reply = ovs_dp_cmd_build_info(dp, info->snd_portid, + info->snd_seq, OVS_DP_CMD_NEW); if (IS_ERR(reply)) return PTR_ERR(reply); return genlmsg_reply(reply, info); } -static int odp_dp_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) +static int ovs_dp_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) { + struct ovs_net *ovs_net = net_generic(sock_net(skb->sk), ovs_net_id); struct datapath *dp; int skip = cb->args[0]; int i = 0; - list_for_each_entry (dp, &dps, list_node) { - if (i < skip) - continue; - if (odp_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).pid, + list_for_each_entry(dp, &ovs_net->dps, list_node) { + if (i >= skip && + ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NLM_F_MULTI, - ODP_DP_CMD_NEW) < 0) + OVS_DP_CMD_NEW) < 0) break; i++; } @@ -1552,113 +1533,103 @@ static int odp_dp_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) } static struct genl_ops dp_datapath_genl_ops[] = { - { .cmd = ODP_DP_CMD_NEW, + { .cmd = OVS_DP_CMD_NEW, .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ .policy = datapath_policy, - .doit = odp_dp_cmd_new + .doit = ovs_dp_cmd_new }, - { .cmd = ODP_DP_CMD_DEL, + { .cmd = OVS_DP_CMD_DEL, .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ .policy = datapath_policy, - .doit = odp_dp_cmd_del + .doit = ovs_dp_cmd_del }, - { .cmd = ODP_DP_CMD_GET, + { .cmd = OVS_DP_CMD_GET, .flags = 0, /* OK for unprivileged users. */ .policy = datapath_policy, - .doit = odp_dp_cmd_get, - .dumpit = odp_dp_cmd_dump + .doit = ovs_dp_cmd_get, + .dumpit = ovs_dp_cmd_dump }, - { .cmd = ODP_DP_CMD_SET, + { .cmd = OVS_DP_CMD_SET, .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ .policy = datapath_policy, - .doit = odp_dp_cmd_set, + .doit = ovs_dp_cmd_set, }, }; -static const struct nla_policy vport_policy[ODP_VPORT_ATTR_MAX + 1] = { +static const struct nla_policy vport_policy[OVS_VPORT_ATTR_MAX + 1] = { #ifdef HAVE_NLA_NUL_STRING - [ODP_VPORT_ATTR_NAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, - [ODP_VPORT_ATTR_PORT_NO] = { .type = NLA_U32 }, - [ODP_VPORT_ATTR_TYPE] = { .type = NLA_U32 }, - [ODP_VPORT_ATTR_STATS] = { .len = sizeof(struct rtnl_link_stats64) }, - [ODP_VPORT_ATTR_ADDRESS] = { .len = ETH_ALEN }, + [OVS_VPORT_ATTR_NAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, + [OVS_VPORT_ATTR_STATS] = { .len = sizeof(struct ovs_vport_stats) }, + [OVS_VPORT_ATTR_ADDRESS] = { .len = ETH_ALEN }, #else - [ODP_VPORT_ATTR_STATS] = { .minlen = sizeof(struct rtnl_link_stats64) }, - [ODP_VPORT_ATTR_ADDRESS] = { .minlen = ETH_ALEN }, + [OVS_VPORT_ATTR_STATS] = { .minlen = sizeof(struct ovs_vport_stats) }, + [OVS_VPORT_ATTR_ADDRESS] = { .minlen = ETH_ALEN }, #endif - [ODP_VPORT_ATTR_MTU] = { .type = NLA_U32 }, - [ODP_VPORT_ATTR_OPTIONS] = { .type = NLA_NESTED }, + [OVS_VPORT_ATTR_PORT_NO] = { .type = NLA_U32 }, + [OVS_VPORT_ATTR_TYPE] = { .type = NLA_U32 }, + [OVS_VPORT_ATTR_UPCALL_PID] = { .type = NLA_U32 }, + [OVS_VPORT_ATTR_OPTIONS] = { .type = NLA_NESTED }, }; static struct genl_family dp_vport_genl_family = { .id = GENL_ID_GENERATE, - .hdrsize = sizeof(struct odp_header), - .name = ODP_VPORT_FAMILY, - .version = 1, - .maxattr = ODP_VPORT_ATTR_MAX + .hdrsize = sizeof(struct ovs_header), + .name = OVS_VPORT_FAMILY, + .version = OVS_VPORT_VERSION, + .maxattr = OVS_VPORT_ATTR_MAX, + SET_NETNSOK }; -static struct genl_multicast_group dp_vport_multicast_group = { - .name = ODP_VPORT_MCGROUP +struct genl_multicast_group ovs_dp_vport_multicast_group = { + .name = OVS_VPORT_MCGROUP }; /* Called with RTNL lock or RCU read lock. */ -static int odp_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb, - u32 pid, u32 seq, u32 flags, u8 cmd) +static int ovs_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb, + u32 portid, u32 seq, u32 flags, u8 cmd) { - struct odp_header *odp_header; - struct nlattr *nla; - int ifindex, iflink; - int mtu; + struct ovs_header *ovs_header; + struct ovs_vport_stats vport_stats; int err; - odp_header = genlmsg_put(skb, pid, seq, &dp_vport_genl_family, + ovs_header = genlmsg_put(skb, portid, seq, &dp_vport_genl_family, flags, cmd); - if (!odp_header) + if (!ovs_header) return -EMSGSIZE; - odp_header->dp_ifindex = vport->dp->dp_ifindex; - - NLA_PUT_U32(skb, ODP_VPORT_ATTR_PORT_NO, vport->port_no); - NLA_PUT_U32(skb, ODP_VPORT_ATTR_TYPE, vport_get_type(vport)); - NLA_PUT_STRING(skb, ODP_VPORT_ATTR_NAME, vport_get_name(vport)); + ovs_header->dp_ifindex = get_dpifindex(vport->dp); - nla = nla_reserve(skb, ODP_VPORT_ATTR_STATS, sizeof(struct rtnl_link_stats64)); - if (!nla) + if (nla_put_u32(skb, OVS_VPORT_ATTR_PORT_NO, vport->port_no) || + nla_put_u32(skb, OVS_VPORT_ATTR_TYPE, vport->ops->type) || + nla_put_string(skb, OVS_VPORT_ATTR_NAME, vport->ops->get_name(vport)) || + nla_put_u32(skb, OVS_VPORT_ATTR_UPCALL_PID, vport->upcall_portid)) goto nla_put_failure; - if (vport_get_stats(vport, nla_data(nla))) - __skb_trim(skb, skb->len - nla->nla_len); - NLA_PUT(skb, ODP_VPORT_ATTR_ADDRESS, ETH_ALEN, vport_get_addr(vport)); + ovs_vport_get_stats(vport, &vport_stats); + if (nla_put(skb, OVS_VPORT_ATTR_STATS, sizeof(struct ovs_vport_stats), + &vport_stats)) + goto nla_put_failure; - mtu = vport_get_mtu(vport); - if (mtu) - NLA_PUT_U32(skb, ODP_VPORT_ATTR_MTU, mtu); + if (nla_put(skb, OVS_VPORT_ATTR_ADDRESS, ETH_ALEN, + vport->ops->get_addr(vport))) + goto nla_put_failure; - err = vport_get_options(vport, skb); + err = ovs_vport_get_options(vport, skb); if (err == -EMSGSIZE) goto error; - ifindex = vport_get_ifindex(vport); - if (ifindex > 0) - NLA_PUT_U32(skb, ODP_VPORT_ATTR_IFINDEX, ifindex); - - iflink = vport_get_iflink(vport); - if (iflink > 0) - NLA_PUT_U32(skb, ODP_VPORT_ATTR_IFLINK, iflink); - - return genlmsg_end(skb, odp_header); + return genlmsg_end(skb, ovs_header); nla_put_failure: err = -EMSGSIZE; error: - genlmsg_cancel(skb, odp_header); + genlmsg_cancel(skb, ovs_header); return err; } /* Called with RTNL lock or RCU read lock. */ -static struct sk_buff *odp_vport_cmd_build_info(struct vport *vport, u32 pid, - u32 seq, u8 cmd) +struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, u32 portid, + u32 seq, u8 cmd) { struct sk_buff *skb; int retval; @@ -1667,7 +1638,7 @@ static struct sk_buff *odp_vport_cmd_build_info(struct vport *vport, u32 pid, if (!skb) return ERR_PTR(-ENOMEM); - retval = odp_vport_cmd_fill_info(vport, skb, pid, seq, 0, cmd); + retval = ovs_vport_cmd_fill_info(vport, skb, portid, seq, 0, cmd); if (retval < 0) { kfree_skb(skb); return ERR_PTR(retval); @@ -1675,34 +1646,38 @@ static struct sk_buff *odp_vport_cmd_build_info(struct vport *vport, u32 pid, return skb; } -static int odp_vport_cmd_validate(struct nlattr *a[ODP_VPORT_ATTR_MAX + 1]) +static int ovs_vport_cmd_validate(struct nlattr *a[OVS_VPORT_ATTR_MAX + 1]) { - return CHECK_NUL_STRING(a[ODP_VPORT_ATTR_NAME], IFNAMSIZ - 1); + return CHECK_NUL_STRING(a[OVS_VPORT_ATTR_NAME], IFNAMSIZ - 1); } /* Called with RTNL lock or RCU read lock. */ -static struct vport *lookup_vport(struct odp_header *odp_header, - struct nlattr *a[ODP_VPORT_ATTR_MAX + 1]) +static struct vport *lookup_vport(struct net *net, + struct ovs_header *ovs_header, + struct nlattr *a[OVS_VPORT_ATTR_MAX + 1]) { struct datapath *dp; struct vport *vport; - if (a[ODP_VPORT_ATTR_NAME]) { - vport = vport_locate(nla_data(a[ODP_VPORT_ATTR_NAME])); + if (a[OVS_VPORT_ATTR_NAME]) { + vport = ovs_vport_locate(net, nla_data(a[OVS_VPORT_ATTR_NAME])); if (!vport) return ERR_PTR(-ENODEV); + if (ovs_header->dp_ifindex && + ovs_header->dp_ifindex != get_dpifindex(vport->dp)) + return ERR_PTR(-ENODEV); return vport; - } else if (a[ODP_VPORT_ATTR_PORT_NO]) { - u32 port_no = nla_get_u32(a[ODP_VPORT_ATTR_PORT_NO]); + } else if (a[OVS_VPORT_ATTR_PORT_NO]) { + u32 port_no = nla_get_u32(a[OVS_VPORT_ATTR_PORT_NO]); if (port_no >= DP_MAX_PORTS) return ERR_PTR(-EFBIG); - dp = get_dp(odp_header->dp_ifindex); + dp = get_dp(net, ovs_header->dp_ifindex); if (!dp) return ERR_PTR(-ENODEV); - vport = get_vport_protected(dp, port_no); + vport = ovs_vport_rtnl_rcu(dp, port_no); if (!vport) return ERR_PTR(-ENOENT); return vport; @@ -1711,22 +1686,24 @@ static struct vport *lookup_vport(struct odp_header *odp_header, } /* Called with RTNL lock. */ -static int change_vport(struct vport *vport, struct nlattr *a[ODP_VPORT_ATTR_MAX + 1]) +static int change_vport(struct vport *vport, + struct nlattr *a[OVS_VPORT_ATTR_MAX + 1]) { int err = 0; - if (a[ODP_VPORT_ATTR_STATS]) - err = vport_set_stats(vport, nla_data(a[ODP_VPORT_ATTR_STATS])); - if (!err && a[ODP_VPORT_ATTR_ADDRESS]) - err = vport_set_addr(vport, nla_data(a[ODP_VPORT_ATTR_ADDRESS])); - if (!err && a[ODP_VPORT_ATTR_MTU]) - err = vport_set_mtu(vport, nla_get_u32(a[ODP_VPORT_ATTR_MTU])); + + if (a[OVS_VPORT_ATTR_STATS]) + ovs_vport_set_stats(vport, nla_data(a[OVS_VPORT_ATTR_STATS])); + + if (a[OVS_VPORT_ATTR_ADDRESS]) + err = ovs_vport_set_addr(vport, nla_data(a[OVS_VPORT_ATTR_ADDRESS])); + return err; } -static int odp_vport_cmd_new(struct sk_buff *skb, struct genl_info *info) +static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info) { struct nlattr **a = info->attrs; - struct odp_header *odp_header = info->userhdr; + struct ovs_header *ovs_header = info->userhdr; struct vport_parms parms; struct sk_buff *reply; struct vport *vport; @@ -1735,27 +1712,28 @@ static int odp_vport_cmd_new(struct sk_buff *skb, struct genl_info *info) int err; err = -EINVAL; - if (!a[ODP_VPORT_ATTR_NAME] || !a[ODP_VPORT_ATTR_TYPE]) + if (!a[OVS_VPORT_ATTR_NAME] || !a[OVS_VPORT_ATTR_TYPE] || + !a[OVS_VPORT_ATTR_UPCALL_PID]) goto exit; - err = odp_vport_cmd_validate(a); + err = ovs_vport_cmd_validate(a); if (err) goto exit; rtnl_lock(); - dp = get_dp(odp_header->dp_ifindex); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); err = -ENODEV; if (!dp) goto exit_unlock; - if (a[ODP_VPORT_ATTR_PORT_NO]) { - port_no = nla_get_u32(a[ODP_VPORT_ATTR_PORT_NO]); + if (a[OVS_VPORT_ATTR_PORT_NO]) { + port_no = nla_get_u32(a[OVS_VPORT_ATTR_PORT_NO]); err = -EFBIG; if (port_no >= DP_MAX_PORTS) goto exit_unlock; - vport = get_vport_protected(dp, port_no); + vport = ovs_vport_rtnl(dp, port_no); err = -EBUSY; if (vport) goto exit_unlock; @@ -1765,40 +1743,38 @@ static int odp_vport_cmd_new(struct sk_buff *skb, struct genl_info *info) err = -EFBIG; goto exit_unlock; } - vport = get_vport_protected(dp, port_no); + vport = ovs_vport_rtnl(dp, port_no); if (!vport) break; } } - parms.name = nla_data(a[ODP_VPORT_ATTR_NAME]); - parms.type = nla_get_u32(a[ODP_VPORT_ATTR_TYPE]); - parms.options = a[ODP_VPORT_ATTR_OPTIONS]; + parms.name = nla_data(a[OVS_VPORT_ATTR_NAME]); + parms.type = nla_get_u32(a[OVS_VPORT_ATTR_TYPE]); + parms.options = a[OVS_VPORT_ATTR_OPTIONS]; parms.dp = dp; parms.port_no = port_no; + parms.upcall_portid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]); vport = new_vport(&parms); err = PTR_ERR(vport); if (IS_ERR(vport)) goto exit_unlock; - set_internal_devs_mtu(dp); - dp_sysfs_add_if(vport); - err = change_vport(vport, a); if (!err) { - reply = odp_vport_cmd_build_info(vport, info->snd_pid, - info->snd_seq, ODP_VPORT_CMD_NEW); + reply = ovs_vport_cmd_build_info(vport, info->snd_portid, + info->snd_seq, + OVS_VPORT_CMD_NEW); if (IS_ERR(reply)) err = PTR_ERR(reply); } if (err) { - dp_detach_port(vport); + ovs_dp_detach_port(vport); goto exit_unlock; } - genl_notify(reply, genl_info_net(info), info->snd_pid, - dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL); - + genl_notify(reply, genl_info_net(info), info->snd_portid, + ovs_dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL); exit_unlock: rtnl_unlock(); @@ -1806,40 +1782,47 @@ exit: return err; } -static int odp_vport_cmd_set(struct sk_buff *skb, struct genl_info *info) +static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info) { struct nlattr **a = info->attrs; struct sk_buff *reply; struct vport *vport; int err; - err = odp_vport_cmd_validate(a); + err = ovs_vport_cmd_validate(a); if (err) goto exit; rtnl_lock(); - vport = lookup_vport(info->userhdr, a); + vport = lookup_vport(sock_net(skb->sk), info->userhdr, a); err = PTR_ERR(vport); if (IS_ERR(vport)) goto exit_unlock; err = 0; - if (a[ODP_VPORT_ATTR_OPTIONS]) - err = vport_set_options(vport, a[ODP_VPORT_ATTR_OPTIONS]); + if (a[OVS_VPORT_ATTR_TYPE] && + nla_get_u32(a[OVS_VPORT_ATTR_TYPE]) != vport->ops->type) + err = -EINVAL; + + if (!err && a[OVS_VPORT_ATTR_OPTIONS]) + err = ovs_vport_set_options(vport, a[OVS_VPORT_ATTR_OPTIONS]); if (!err) err = change_vport(vport, a); + else + goto exit_unlock; + if (!err && a[OVS_VPORT_ATTR_UPCALL_PID]) + vport->upcall_portid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]); - reply = odp_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq, - ODP_VPORT_CMD_NEW); + reply = ovs_vport_cmd_build_info(vport, info->snd_portid, + info->snd_seq, OVS_VPORT_CMD_NEW); if (IS_ERR(reply)) { - err = PTR_ERR(reply); - netlink_set_err(INIT_NET_GENL_SOCK, 0, - dp_vport_multicast_group.id, err); - return 0; + netlink_set_err(GENL_SOCK(sock_net(skb->sk)), 0, + ovs_dp_vport_multicast_group.id, PTR_ERR(reply)); + goto exit_unlock; } - genl_notify(reply, genl_info_net(info), info->snd_pid, - dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL); + genl_notify(reply, genl_info_net(info), info->snd_portid, + ovs_dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL); exit_unlock: rtnl_unlock(); @@ -1847,38 +1830,38 @@ exit: return err; } -static int odp_vport_cmd_del(struct sk_buff *skb, struct genl_info *info) +static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info) { struct nlattr **a = info->attrs; struct sk_buff *reply; struct vport *vport; int err; - err = odp_vport_cmd_validate(a); + err = ovs_vport_cmd_validate(a); if (err) goto exit; rtnl_lock(); - vport = lookup_vport(info->userhdr, a); + vport = lookup_vport(sock_net(skb->sk), info->userhdr, a); err = PTR_ERR(vport); if (IS_ERR(vport)) goto exit_unlock; - if (vport->port_no == ODPP_LOCAL) { + if (vport->port_no == OVSP_LOCAL) { err = -EINVAL; goto exit_unlock; } - reply = odp_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq, - ODP_VPORT_CMD_DEL); + reply = ovs_vport_cmd_build_info(vport, info->snd_portid, + info->snd_seq, OVS_VPORT_CMD_DEL); err = PTR_ERR(reply); if (IS_ERR(reply)) goto exit_unlock; - err = dp_detach_port(vport); + ovs_dp_detach_port(vport); - genl_notify(reply, genl_info_net(info), info->snd_pid, - dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL); + genl_notify(reply, genl_info_net(info), info->snd_portid, + ovs_dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL); exit_unlock: rtnl_unlock(); @@ -1886,26 +1869,26 @@ exit: return err; } -static int odp_vport_cmd_get(struct sk_buff *skb, struct genl_info *info) +static int ovs_vport_cmd_get(struct sk_buff *skb, struct genl_info *info) { struct nlattr **a = info->attrs; - struct odp_header *odp_header = info->userhdr; + struct ovs_header *ovs_header = info->userhdr; struct sk_buff *reply; struct vport *vport; int err; - err = odp_vport_cmd_validate(a); + err = ovs_vport_cmd_validate(a); if (err) goto exit; rcu_read_lock(); - vport = lookup_vport(odp_header, a); + vport = lookup_vport(sock_net(skb->sk), ovs_header, a); err = PTR_ERR(vport); if (IS_ERR(vport)) goto exit_unlock; - reply = odp_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq, - ODP_VPORT_CMD_NEW); + reply = ovs_vport_cmd_build_info(vport, info->snd_portid, + info->snd_seq, OVS_VPORT_CMD_NEW); err = PTR_ERR(reply); if (IS_ERR(reply)) goto exit_unlock; @@ -1920,59 +1903,66 @@ exit: return err; } -static int odp_vport_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) +static int ovs_vport_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) { - struct odp_header *odp_header = genlmsg_data(nlmsg_data(cb->nlh)); + struct ovs_header *ovs_header = genlmsg_data(nlmsg_data(cb->nlh)); struct datapath *dp; - u32 port_no; - int retval; + int bucket = cb->args[0], skip = cb->args[1]; + int i, j = 0; - dp = get_dp(odp_header->dp_ifindex); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); if (!dp) return -ENODEV; rcu_read_lock(); - for (port_no = cb->args[0]; port_no < DP_MAX_PORTS; port_no++) { + for (i = bucket; i < DP_VPORT_HASH_BUCKETS; i++) { struct vport *vport; - - vport = get_vport_protected(dp, port_no); - if (!vport) - continue; - - if (odp_vport_cmd_fill_info(vport, skb, NETLINK_CB(cb->skb).pid, - cb->nlh->nlmsg_seq, NLM_F_MULTI, - ODP_VPORT_CMD_NEW) < 0) - break; + struct hlist_node *n; + + j = 0; + hlist_for_each_entry_rcu(vport, n, &dp->ports[i], dp_hash_node) { + if (j >= skip && + ovs_vport_cmd_fill_info(vport, skb, + NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, + NLM_F_MULTI, + OVS_VPORT_CMD_NEW) < 0) + goto out; + + j++; + } + skip = 0; } +out: rcu_read_unlock(); - cb->args[0] = port_no; - retval = skb->len; + cb->args[0] = i; + cb->args[1] = j; - return retval; + return skb->len; } static struct genl_ops dp_vport_genl_ops[] = { - { .cmd = ODP_VPORT_CMD_NEW, + { .cmd = OVS_VPORT_CMD_NEW, .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ .policy = vport_policy, - .doit = odp_vport_cmd_new + .doit = ovs_vport_cmd_new }, - { .cmd = ODP_VPORT_CMD_DEL, + { .cmd = OVS_VPORT_CMD_DEL, .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ .policy = vport_policy, - .doit = odp_vport_cmd_del + .doit = ovs_vport_cmd_del }, - { .cmd = ODP_VPORT_CMD_GET, + { .cmd = OVS_VPORT_CMD_GET, .flags = 0, /* OK for unprivileged users. */ .policy = vport_policy, - .doit = odp_vport_cmd_get, - .dumpit = odp_vport_cmd_dump + .doit = ovs_vport_cmd_get, + .dumpit = ovs_vport_cmd_dump }, - { .cmd = ODP_VPORT_CMD_SET, + { .cmd = OVS_VPORT_CMD_SET, .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */ .policy = vport_policy, - .doit = odp_vport_cmd_set, + .doit = ovs_vport_cmd_set, }, }; @@ -1986,13 +1976,13 @@ struct genl_family_and_ops { static const struct genl_family_and_ops dp_genl_families[] = { { &dp_datapath_genl_family, dp_datapath_genl_ops, ARRAY_SIZE(dp_datapath_genl_ops), - &dp_datapath_multicast_group }, + &ovs_dp_datapath_multicast_group }, { &dp_vport_genl_family, dp_vport_genl_ops, ARRAY_SIZE(dp_vport_genl_ops), - &dp_vport_multicast_group }, + &ovs_dp_vport_multicast_group }, { &dp_flow_genl_family, dp_flow_genl_ops, ARRAY_SIZE(dp_flow_genl_ops), - &dp_flow_multicast_group }, + &ovs_dp_flow_multicast_group }, { &dp_packet_genl_family, dp_packet_genl_ops, ARRAY_SIZE(dp_packet_genl_ops), NULL }, @@ -2002,9 +1992,8 @@ static void dp_unregister_genl(int n_families) { int i; - for (i = 0; i < n_families; i++) { + for (i = 0; i < n_families; i++) genl_unregister_family(dp_genl_families[i].family); - } } static int dp_register_genl(void) @@ -2030,9 +2019,6 @@ static int dp_register_genl(void) } } - err = packet_register_mc_groups(); - if (err) - goto error; return 0; error: @@ -2040,6 +2026,69 @@ error: return err; } +static int __rehash_flow_table(void *dummy) +{ + struct datapath *dp; + struct net *net; + + rtnl_lock(); + for_each_net(net) { + struct ovs_net *ovs_net = net_generic(net, ovs_net_id); + + list_for_each_entry(dp, &ovs_net->dps, list_node) { + struct flow_table *old_table = genl_dereference(dp->table); + struct flow_table *new_table; + + new_table = ovs_flow_tbl_rehash(old_table); + if (!IS_ERR(new_table)) { + rcu_assign_pointer(dp->table, new_table); + ovs_flow_tbl_deferred_destroy(old_table); + } + } + } + rtnl_unlock(); + return 0; +} + +static void rehash_flow_table(struct work_struct *work) +{ + genl_exec(__rehash_flow_table, NULL); + schedule_delayed_work(&rehash_flow_wq, REHASH_FLOW_INTERVAL); +} + +static int dp_destroy_all(void *data) +{ + struct datapath *dp, *dp_next; + struct ovs_net *ovs_net = data; + + list_for_each_entry_safe(dp, dp_next, &ovs_net->dps, list_node) + __dp_destroy(dp); + + return 0; +} + +static int __net_init ovs_init_net(struct net *net) +{ + struct ovs_net *ovs_net = net_generic(net, ovs_net_id); + + INIT_LIST_HEAD(&ovs_net->dps); + return 0; +} + +static void __net_exit ovs_exit_net(struct net *net) +{ + struct ovs_net *ovs_net = net_generic(net, ovs_net_id); + + genl_exec(dp_destroy_all, ovs_net); +} + +static struct pernet_operations ovs_net_ops = { + .init = ovs_init_net, + .exit = ovs_exit_net, + .id = &ovs_net_id, + .size = sizeof(struct ovs_net), +}; + static int __init dp_init(void) { struct sk_buff *dummy_skb; @@ -2047,43 +2096,75 @@ static int __init dp_init(void) BUILD_BUG_ON(sizeof(struct ovs_skb_cb) > sizeof(dummy_skb->cb)); - printk("Open vSwitch %s, built "__DATE__" "__TIME__"\n", VERSION BUILDNR); + pr_info("Open vSwitch switching datapath %s, built "__DATE__" "__TIME__"\n", + VERSION); - err = flow_init(); + err = genl_exec_init(); if (err) goto error; - err = vport_init(); + err = ovs_workqueues_init(); + if (err) + goto error_genl_exec; + + err = ovs_tnl_init(); + if (err) + goto error_wq; + + err = ovs_flow_init(); + if (err) + goto error_tnl_exit; + + err = ovs_vport_init(); if (err) goto error_flow_exit; - err = register_netdevice_notifier(&dp_device_notifier); + err = register_pernet_device(&ovs_net_ops); if (err) goto error_vport_exit; + err = register_netdevice_notifier(&ovs_dp_device_notifier); + if (err) + goto error_netns_exit; + err = dp_register_genl(); if (err < 0) goto error_unreg_notifier; + schedule_delayed_work(&rehash_flow_wq, REHASH_FLOW_INTERVAL); + return 0; error_unreg_notifier: - unregister_netdevice_notifier(&dp_device_notifier); + unregister_netdevice_notifier(&ovs_dp_device_notifier); +error_netns_exit: + unregister_pernet_device(&ovs_net_ops); error_vport_exit: - vport_exit(); + ovs_vport_exit(); error_flow_exit: - flow_exit(); + ovs_flow_exit(); +error_tnl_exit: + ovs_tnl_exit(); +error_wq: + ovs_workqueues_exit(); +error_genl_exec: + genl_exec_exit(); error: return err; } static void dp_cleanup(void) { - rcu_barrier(); + cancel_delayed_work_sync(&rehash_flow_wq); dp_unregister_genl(ARRAY_SIZE(dp_genl_families)); - unregister_netdevice_notifier(&dp_device_notifier); - vport_exit(); - flow_exit(); + unregister_netdevice_notifier(&ovs_dp_device_notifier); + unregister_pernet_device(&ovs_net_ops); + rcu_barrier(); + ovs_vport_exit(); + ovs_flow_exit(); + ovs_tnl_exit(); + ovs_workqueues_exit(); + genl_exec_exit(); } module_init(dp_init); @@ -2091,3 +2172,4 @@ module_exit(dp_cleanup); MODULE_DESCRIPTION("Open vSwitch switching datapath"); MODULE_LICENSE("GPL"); +MODULE_VERSION(VERSION);