X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=datapath%2Fdatapath.c;h=b731c201261b24ba2a8c5c894940427b10d6ce54;hb=ea7655d9f9d38a3af7250de8ba0b89115b5f4a5e;hp=e88b1da240067e507bab8961093940829bf85707;hpb=9321954ac2ed1bdb5a397e2fab7ce591f9d883a9;p=sliver-openvswitch.git diff --git a/datapath/datapath.c b/datapath/datapath.c index e88b1da24..b731c2012 100644 --- a/datapath/datapath.c +++ b/datapath/datapath.c @@ -61,8 +61,8 @@ #include "vport-internal_dev.h" #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18) || \ - LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,0) -#error Kernels before 2.6.18 or after 3.6 are not supported by this version of Open vSwitch. + LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0) +#error Kernels before 2.6.18 or after 3.8 are not supported by this version of Open vSwitch. #endif #define REHASH_FLOW_INTERVAL (10 * 60 * HZ) @@ -71,9 +71,6 @@ static DECLARE_DELAYED_WORK(rehash_flow_wq, rehash_flow_table); int ovs_net_id __read_mostly; -int (*ovs_dp_ioctl_hook)(struct net_device *dev, struct ifreq *rq, int cmd); -EXPORT_SYMBOL(ovs_dp_ioctl_hook); - /** * DOC: Locking: * @@ -141,101 +138,6 @@ static int get_dpifindex(struct datapath *dp) return ifindex; } -static size_t br_nlmsg_size(void) -{ - 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(1); /* IFLA_OPERSTATE */ -} - -/* Caller must hold RTNL lock. */ -static int dp_fill_ifinfo(struct sk_buff *skb, - const struct vport *port, - int event, unsigned int flags) -{ - struct datapath *dp = port->dp; - struct ifinfomsg *hdr; - struct nlmsghdr *nlh; - - if (!port->ops->get_ifindex) - return -ENODEV; - - 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 = port->ops->get_ifindex(port); - hdr->ifi_flags = port->ops->get_dev_flags(port); - hdr->ifi_change = 0; - - if (nla_put_string(skb, IFLA_IFNAME, port->ops->get_name(port)) || - nla_put_u32(skb, IFLA_MASTER, get_dpifindex(dp)) || - nla_put_u32(skb, IFLA_MTU, port->ops->get_mtu(port)) || -#ifdef IFLA_OPERSTATE - nla_put_u8(skb, IFLA_OPERSTATE, - port->ops->is_running(port) ? - port->ops->get_operstate(port) : - IF_OPER_DOWN) || -#endif - nla_put(skb, IFLA_ADDRESS, ETH_ALEN, port->ops->get_addr(port))) - goto nla_put_failure; - - return nlmsg_end(skb, nlh); - -nla_put_failure: - nlmsg_cancel(skb, nlh); - return -EMSGSIZE; -} - -/* Caller must hold RTNL lock. */ -static void dp_ifinfo_notify(int event, struct vport *port) -{ - struct sk_buff *skb; - int err; - - skb = nlmsg_new(br_nlmsg_size(), GFP_KERNEL); - if (!skb) { - err = -ENOBUFS; - goto err; - } - - err = dp_fill_ifinfo(skb, port, event, 0); - if (err < 0) { - if (err == -ENODEV) { - goto out; - } else { - /* -EMSGSIZE implies BUG in br_nlmsg_size() */ - WARN_ON(err == -EMSGSIZE); - goto err; - } - } - - rtnl_notify(skb, ovs_dp_get_net(port->dp), 0, RTNLGRP_LINK, NULL, GFP_KERNEL); - - return; -err: - rtnl_set_sk_err(ovs_dp_get_net(port->dp), RTNLGRP_LINK, err); -out: - kfree_skb(skb); -} - -static void release_dp(struct kobject *kobj) -{ - struct datapath *dp = container_of(kobj, struct datapath, ifobj); - kfree(dp); -} - -static struct kobj_type dp_ktype = { - .release = release_dp -}; - static void destroy_dp_rcu(struct rcu_head *rcu) { struct datapath *dp = container_of(rcu, struct datapath, rcu); @@ -244,7 +146,7 @@ static void destroy_dp_rcu(struct rcu_head *rcu) free_percpu(dp->stats_percpu); release_net(ovs_dp_get_net(dp)); kfree(dp->ports); - kobject_put(&dp->ifobj); + kfree(dp); } static struct hlist_head *vport_hash_bucket(const struct datapath *dp, @@ -278,7 +180,6 @@ static struct vport *new_vport(const struct vport_parms *parms) struct hlist_head *head = vport_hash_bucket(dp, vport->port_no); hlist_add_head_rcu(&vport->dp_hash_node, head); - dp_ifinfo_notify(RTM_NEWLINK, vport); } return vport; } @@ -288,11 +189,6 @@ void ovs_dp_detach_port(struct vport *p) { ASSERT_RTNL(); - if (p->port_no != OVSP_LOCAL) - ovs_dp_sysfs_del_if(p); - - dp_ifinfo_notify(RTM_DELLINK, p); - /* First drop references to device. */ hlist_del_rcu(&p->dp_hash_node); @@ -309,7 +205,7 @@ void ovs_dp_process_received_packet(struct vport *p, struct sk_buff *skb) u64 *stats_counter; int error; - stats = per_cpu_ptr(dp->stats_percpu, smp_processor_id()); + stats = this_cpu_ptr(dp->stats_percpu); if (!OVS_CB(skb)->flow) { struct sw_flow_key key; @@ -331,7 +227,7 @@ void ovs_dp_process_received_packet(struct vport *p, struct sk_buff *skb) upcall.cmd = OVS_PACKET_CMD_MISS; upcall.key = &key; upcall.userdata = NULL; - upcall.pid = p->upcall_pid; + upcall.portid = p->upcall_portid; ovs_dp_upcall(dp, skb, &upcall); consume_skb(skb); stats_counter = &stats->n_missed; @@ -368,7 +264,7 @@ int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb, int dp_ifindex; int err; - if (upcall_info->pid == 0) { + if (upcall_info->portid == 0) { err = -ENOTCONN; goto err; } @@ -391,7 +287,7 @@ int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb, return 0; err: - stats = per_cpu_ptr(dp->stats_percpu, smp_processor_id()); + stats = this_cpu_ptr(dp->stats_percpu); u64_stats_update_begin(&stats->sync); stats->n_lost++; @@ -503,7 +399,7 @@ static int queue_userspace_packet(struct net *net, int dp_ifindex, skb_copy_and_csum_dev(skb, nla_data(nla)); - err = genlmsg_unicast(net, user_skb, upcall_info->pid); + err = genlmsg_unicast(net, user_skb, upcall_info->portid); out: kfree_skb(nskb); @@ -527,16 +423,89 @@ static int flush_flows(struct datapath *dp) return 0; } -static int validate_actions(const struct nlattr *attr, - const struct sw_flow_key *key, int depth); +static struct nlattr *reserve_sfa_size(struct sw_flow_actions **sfa, int attr_len) +{ + + struct sw_flow_actions *acts; + int new_acts_size; + int req_size = NLA_ALIGN(attr_len); + int next_offset = offsetof(struct sw_flow_actions, actions) + + (*sfa)->actions_len; + + if (req_size <= (ksize(*sfa) - next_offset)) + goto out; + + new_acts_size = ksize(*sfa) * 2; + + if (new_acts_size > MAX_ACTIONS_BUFSIZE) { + if ((MAX_ACTIONS_BUFSIZE - next_offset) < req_size) + return ERR_PTR(-EMSGSIZE); + new_acts_size = MAX_ACTIONS_BUFSIZE; + } + + acts = ovs_flow_actions_alloc(new_acts_size); + if (IS_ERR(acts)) + return (void *)acts; + + memcpy(acts->actions, (*sfa)->actions, (*sfa)->actions_len); + acts->actions_len = (*sfa)->actions_len; + kfree(*sfa); + *sfa = acts; + +out: + (*sfa)->actions_len += req_size; + return (struct nlattr *) ((unsigned char *)(*sfa) + next_offset); +} + +static int add_action(struct sw_flow_actions **sfa, int attrtype, void *data, int len) +{ + struct nlattr *a; + + a = reserve_sfa_size(sfa, nla_attr_size(len)); + if (IS_ERR(a)) + return PTR_ERR(a); + + a->nla_type = attrtype; + a->nla_len = nla_attr_size(len); + + if (data) + memcpy(nla_data(a), data, len); + memset((unsigned char *) a + a->nla_len, 0, nla_padlen(len)); + + return 0; +} + +static inline int add_nested_action_start(struct sw_flow_actions **sfa, int attrtype) +{ + int used = (*sfa)->actions_len; + int err; + + err = add_action(sfa, attrtype, NULL, 0); + if (err) + return err; + + return used; +} + +static inline void add_nested_action_end(struct sw_flow_actions *sfa, int st_offset) +{ + struct nlattr *a = (struct nlattr *) ((unsigned char *)sfa->actions + st_offset); + + a->nla_len = sfa->actions_len - st_offset; +} + +static int validate_and_copy_actions(const struct nlattr *attr, + const struct sw_flow_key *key, int depth, + struct sw_flow_actions **sfa); -static int validate_sample(const struct nlattr *attr, - const struct sw_flow_key *key, int depth) +static int validate_and_copy_sample(const struct nlattr *attr, + const struct sw_flow_key *key, int depth, + struct sw_flow_actions **sfa) { const struct nlattr *attrs[OVS_SAMPLE_ATTR_MAX + 1]; const struct nlattr *probability, *actions; const struct nlattr *a; - int rem; + int rem, start, err, st_acts; memset(attrs, 0, sizeof(attrs)); nla_for_each_nested(a, attr, rem) { @@ -555,7 +524,26 @@ static int validate_sample(const struct nlattr *attr, 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); + + /* validation done, copy sample action. */ + start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SAMPLE); + if (start < 0) + return start; + err = add_action(sfa, OVS_SAMPLE_ATTR_PROBABILITY, nla_data(probability), sizeof(u32)); + if (err) + return err; + st_acts = add_nested_action_start(sfa, OVS_SAMPLE_ATTR_ACTIONS); + if (st_acts < 0) + return st_acts; + + err = validate_and_copy_actions(actions, key, depth + 1, sfa); + if (err) + return err; + + add_nested_action_end(*sfa, st_acts); + add_nested_action_end(*sfa, start); + + return 0; } static int validate_tp_port(const struct sw_flow_key *flow_key) @@ -571,8 +559,30 @@ static int validate_tp_port(const struct sw_flow_key *flow_key) return -EINVAL; } +static int validate_and_copy_set_tun(const struct nlattr *attr, + struct sw_flow_actions **sfa) +{ + struct ovs_key_ipv4_tunnel tun_key; + int err, start; + + err = ipv4_tun_from_nlattr(nla_data(attr), &tun_key); + if (err) + return err; + + start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SET); + if (start < 0) + return start; + + err = add_action(sfa, OVS_KEY_ATTR_IPV4_TUNNEL, &tun_key, sizeof(tun_key)); + add_nested_action_end(*sfa, start); + + return err; +} + static int validate_set(const struct nlattr *a, - const struct sw_flow_key *flow_key) + const struct sw_flow_key *flow_key, + struct sw_flow_actions **sfa, + bool *set_tun) { const struct nlattr *ovs_key = nla_data(a); int key_type = nla_type(ovs_key); @@ -582,22 +592,32 @@ static int validate_set(const struct nlattr *a, return -EINVAL; if (key_type > OVS_KEY_ATTR_MAX || - nla_len(ovs_key) != ovs_key_lens[key_type]) + (ovs_key_lens[key_type] != nla_len(ovs_key) && + ovs_key_lens[key_type] != -1)) 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; + int err; case OVS_KEY_ATTR_PRIORITY: case OVS_KEY_ATTR_TUN_ID: case OVS_KEY_ATTR_ETHERNET: break; - case OVS_KEY_ATTR_IPV4_TUNNEL: - tun_key = nla_data(ovs_key); - if (!tun_key->ipv4_dst) + 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_TUNNEL: + *set_tun = true; + err = validate_and_copy_set_tun(a, sfa); + if (err) + return err; break; case OVS_KEY_ATTR_IPV4: @@ -616,6 +636,25 @@ static int validate_set(const struct nlattr *a, 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; @@ -656,8 +695,24 @@ static int validate_userspace(const struct nlattr *attr) return 0; } -static int validate_actions(const struct nlattr *attr, - const struct sw_flow_key *key, int depth) +static int copy_action(const struct nlattr *from, + struct sw_flow_actions **sfa) +{ + int totlen = NLA_ALIGN(from->nla_len); + struct nlattr *to; + + to = reserve_sfa_size(sfa, from->nla_len); + if (IS_ERR(to)) + return PTR_ERR(to); + + memcpy(to, from, totlen); + return 0; +} + +static int validate_and_copy_actions(const struct nlattr *attr, + const struct sw_flow_key *key, + int depth, + struct sw_flow_actions **sfa) { const struct nlattr *a; int rem, err; @@ -677,12 +732,14 @@ static int validate_actions(const struct nlattr *attr, }; const struct ovs_action_push_vlan *vlan; int type = nla_type(a); + bool skip_copy; if (type > OVS_ACTION_ATTR_MAX || (action_lens[type] != nla_len(a) && action_lens[type] != (u32)-1)) return -EINVAL; + skip_copy = false; switch (type) { case OVS_ACTION_ATTR_UNSPEC: return -EINVAL; @@ -711,20 +768,26 @@ static int validate_actions(const struct nlattr *attr, break; case OVS_ACTION_ATTR_SET: - err = validate_set(a, key); + err = validate_set(a, key, sfa, &skip_copy); if (err) return err; break; case OVS_ACTION_ATTR_SAMPLE: - err = validate_sample(a, key, depth); + err = validate_and_copy_sample(a, key, depth, sfa); if (err) return err; + skip_copy = true; break; default: return -EINVAL; } + if (!skip_copy) { + err = copy_action(a, sfa); + if (err) + return err; + } } if (rem > 0) @@ -793,19 +856,19 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) err = ovs_flow_metadata_from_nlattrs(flow, key_len, a[OVS_PACKET_ATTR_KEY]); if (err) goto err_flow_free; - - 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]); + acts = ovs_flow_actions_alloc(nla_len(a[OVS_PACKET_ATTR_ACTIONS])); err = PTR_ERR(acts); if (IS_ERR(acts)) goto err_flow_free; + + err = validate_and_copy_actions(a[OVS_PACKET_ATTR_ACTIONS], &flow->key, 0, &acts); rcu_assign_pointer(flow->sf_acts, acts); + if (err) + goto err_flow_free; 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(sock_net(skb->sk), ovs_header->dp_ifindex); @@ -890,13 +953,107 @@ static struct genl_multicast_group ovs_dp_flow_multicast_group = { .name = OVS_FLOW_MCGROUP }; +static int actions_to_attr(const struct nlattr *attr, int len, struct sk_buff *skb); +static int sample_action_to_attr(const struct nlattr *attr, struct sk_buff *skb) +{ + const struct nlattr *a; + struct nlattr *start; + int err = 0, rem; + + start = nla_nest_start(skb, OVS_ACTION_ATTR_SAMPLE); + if (!start) + return -EMSGSIZE; + + nla_for_each_nested(a, attr, rem) { + int type = nla_type(a); + struct nlattr *st_sample; + + switch (type) { + case OVS_SAMPLE_ATTR_PROBABILITY: + if (nla_put(skb, OVS_SAMPLE_ATTR_PROBABILITY, sizeof(u32), nla_data(a))) + return -EMSGSIZE; + break; + case OVS_SAMPLE_ATTR_ACTIONS: + st_sample = nla_nest_start(skb, OVS_SAMPLE_ATTR_ACTIONS); + if (!st_sample) + return -EMSGSIZE; + err = actions_to_attr(nla_data(a), nla_len(a), skb); + if (err) + return err; + nla_nest_end(skb, st_sample); + break; + } + } + + nla_nest_end(skb, start); + return err; +} + +static int set_action_to_attr(const struct nlattr *a, struct sk_buff *skb) +{ + const struct nlattr *ovs_key = nla_data(a); + int key_type = nla_type(ovs_key); + struct nlattr *start; + int err; + + switch (key_type) { + case OVS_KEY_ATTR_IPV4_TUNNEL: + start = nla_nest_start(skb, OVS_ACTION_ATTR_SET); + if (!start) + return -EMSGSIZE; + + err = ipv4_tun_to_nlattr(skb, nla_data(ovs_key)); + if (err) + return err; + nla_nest_end(skb, start); + break; + default: + if (nla_put(skb, OVS_ACTION_ATTR_SET, nla_len(a), ovs_key)) + return -EMSGSIZE; + break; + } + + return 0; +} + +static int actions_to_attr(const struct nlattr *attr, int len, struct sk_buff *skb) +{ + const struct nlattr *a; + int rem, err; + + nla_for_each_attr(a, attr, len, rem) { + int type = nla_type(a); + + switch (type) { + case OVS_ACTION_ATTR_SET: + err = set_action_to_attr(a, skb); + if (err) + return err; + break; + + case OVS_ACTION_ATTR_SAMPLE: + err = sample_action_to_attr(a, skb); + if (err) + return err; + break; + default: + if (nla_put(skb, type, nla_len(a), nla_data(a))) + return -EMSGSIZE; + break; + } + } + + return 0; +} + /* Called with genl_lock. */ static int ovs_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp, - struct sk_buff *skb, u32 pid, + 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 nlattr *start; struct ovs_flow_stats stats; struct ovs_header *ovs_header; struct nlattr *nla; @@ -907,7 +1064,7 @@ static int ovs_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp, sf_acts = rcu_dereference_protected(flow->sf_acts, lockdep_genl_is_held()); - ovs_header = genlmsg_put(skb, pid, seq, &dp_flow_genl_family, flags, cmd); + ovs_header = genlmsg_put(skb, portid, seq, &dp_flow_genl_family, flags, cmd); if (!ovs_header) return -EMSGSIZE; @@ -951,10 +1108,19 @@ static int ovs_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, OVS_FLOW_ATTR_ACTIONS, sf_acts->actions_len, - sf_acts->actions); - if (err < 0 && skb_orig_len) - goto error; + start = nla_nest_start(skb, OVS_FLOW_ATTR_ACTIONS); + if (start) { + err = actions_to_attr(sf_acts->actions, sf_acts->actions_len, skb); + if (!err) + nla_nest_end(skb, start); + else { + if (skb_orig_len) + goto error; + + nla_nest_cancel(skb, start); + } + } else if (skb_orig_len) + goto nla_put_failure; return genlmsg_end(skb, ovs_header); @@ -991,7 +1157,7 @@ static struct sk_buff *ovs_flow_cmd_alloc_info(struct sw_flow *flow) static struct sk_buff *ovs_flow_cmd_build_info(struct sw_flow *flow, struct datapath *dp, - u32 pid, u32 seq, u8 cmd) + u32 portid, u32 seq, u8 cmd) { struct sk_buff *skb; int retval; @@ -1000,7 +1166,7 @@ static struct sk_buff *ovs_flow_cmd_build_info(struct sw_flow *flow, if (!skb) return ERR_PTR(-ENOMEM); - retval = ovs_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; } @@ -1014,6 +1180,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) struct sk_buff *reply; struct datapath *dp; struct flow_table *table; + struct sw_flow_actions *acts = NULL; int error; int key_len; @@ -1027,9 +1194,14 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) /* Validate actions. */ if (a[OVS_FLOW_ATTR_ACTIONS]) { - error = validate_actions(a[OVS_FLOW_ATTR_ACTIONS], &key, 0); - if (error) + acts = ovs_flow_actions_alloc(nla_len(a[OVS_FLOW_ATTR_ACTIONS])); + error = PTR_ERR(acts); + if (IS_ERR(acts)) goto error; + + error = validate_and_copy_actions(a[OVS_FLOW_ATTR_ACTIONS], &key, 0, &acts); + if (error) + goto err_kfree; } else if (info->genlhdr->cmd == OVS_FLOW_CMD_NEW) { error = -EINVAL; goto error; @@ -1038,17 +1210,15 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); error = -ENODEV; if (!dp) - goto error; + goto err_kfree; 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 == OVS_FLOW_CMD_SET) - goto error; + goto err_kfree; /* Expand table, if necessary, to make room. */ if (ovs_flow_tbl_need_to_expand(table)) { @@ -1066,27 +1236,21 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) flow = ovs_flow_alloc(); if (IS_ERR(flow)) { error = PTR_ERR(flow); - goto error; + goto err_kfree; } clear_stats(flow); - /* Obtain 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. */ ovs_flow_tbl_insert(table, flow, &key, key_len); - reply = ovs_flow_cmd_build_info(flow, dp, info->snd_pid, + 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 @@ -1097,28 +1261,15 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) error = -EEXIST; if (info->genlhdr->cmd == OVS_FLOW_CMD_NEW && info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) - goto error; + goto err_kfree; /* Update actions. */ old_acts = rcu_dereference_protected(flow->sf_acts, lockdep_genl_is_held()); - 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 = 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); - ovs_flow_deferred_free_acts(old_acts); - } + rcu_assign_pointer(flow->sf_acts, acts); + ovs_flow_deferred_free_acts(old_acts); - reply = ovs_flow_cmd_build_info(flow, dp, info->snd_pid, + reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid, info->snd_seq, OVS_FLOW_CMD_NEW); /* Clear stats. */ @@ -1130,7 +1281,7 @@ static int ovs_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, + genl_notify(reply, genl_info_net(info), info->snd_portid, ovs_dp_flow_multicast_group.id, info->nlhdr, GFP_KERNEL); else @@ -1138,8 +1289,8 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) ovs_dp_flow_multicast_group.id, PTR_ERR(reply)); return 0; -error_free_flow: - ovs_flow_free(flow); +err_kfree: + kfree(acts); error: return error; } @@ -1171,7 +1322,7 @@ static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info) if (!flow) return -ENOENT; - reply = ovs_flow_cmd_build_info(flow, dp, info->snd_pid, + 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); @@ -1213,13 +1364,13 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info) ovs_flow_tbl_remove(table, flow); - err = ovs_flow_cmd_fill_info(flow, dp, reply, info->snd_pid, + err = ovs_flow_cmd_fill_info(flow, dp, reply, info->snd_portid, info->snd_seq, 0, OVS_FLOW_CMD_DEL); BUG_ON(err < 0); ovs_flow_deferred_free(flow); - genl_notify(reply, genl_info_net(info), info->snd_pid, + genl_notify(reply, genl_info_net(info), info->snd_portid, ovs_dp_flow_multicast_group.id, info->nlhdr, GFP_KERNEL); return 0; } @@ -1247,7 +1398,7 @@ static int ovs_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) break; if (ovs_flow_cmd_fill_info(flow, dp, skb, - NETLINK_CB(cb->skb).pid, + NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NLM_F_MULTI, OVS_FLOW_CMD_NEW) < 0) break; @@ -1303,13 +1454,13 @@ static struct genl_multicast_group ovs_dp_datapath_multicast_group = { }; static int ovs_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb, - u32 pid, u32 seq, u32 flags, u8 cmd) + u32 portid, u32 seq, u32 flags, u8 cmd) { struct ovs_header *ovs_header; struct ovs_dp_stats dp_stats; int err; - ovs_header = genlmsg_put(skb, pid, seq, &dp_datapath_genl_family, + ovs_header = genlmsg_put(skb, portid, seq, &dp_datapath_genl_family, flags, cmd); if (!ovs_header) goto error; @@ -1334,7 +1485,7 @@ error: return -EMSGSIZE; } -static struct sk_buff *ovs_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; @@ -1344,7 +1495,7 @@ static struct sk_buff *ovs_dp_cmd_build_info(struct datapath *dp, u32 pid, if (!skb) return ERR_PTR(-ENOMEM); - retval = ovs_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); @@ -1402,11 +1553,6 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) if (dp == NULL) 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. */ @@ -1437,7 +1583,7 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) parms.options = NULL; parms.dp = dp; parms.port_no = OVSP_LOCAL; - parms.upcall_pid = nla_get_u32(a[OVS_DP_ATTR_UPCALL_PID]); + parms.upcall_portid = nla_get_u32(a[OVS_DP_ATTR_UPCALL_PID]); vport = new_vport(&parms); if (IS_ERR(vport)) { @@ -1448,7 +1594,7 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) goto err_destroy_ports_array; } - reply = ovs_dp_cmd_build_info(dp, info->snd_pid, + 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)) @@ -1456,11 +1602,10 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) ovs_net = net_generic(ovs_dp_get_net(dp), ovs_net_id); list_add_tail(&dp->list_node, &ovs_net->dps); - ovs_dp_sysfs_add_dp(dp); rtnl_unlock(); - genl_notify(reply, genl_info_net(info), info->snd_pid, + genl_notify(reply, genl_info_net(info), info->snd_portid, ovs_dp_datapath_multicast_group.id, info->nlhdr, GFP_KERNEL); return 0; @@ -1498,7 +1643,6 @@ static void __dp_destroy(struct datapath *dp) ovs_dp_detach_port(vport); } - ovs_dp_sysfs_del_dp(dp); list_del(&dp->list_node); ovs_dp_detach_port(ovs_vport_rtnl(dp, OVSP_LOCAL)); @@ -1527,7 +1671,7 @@ static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) if (IS_ERR(dp)) return err; - reply = ovs_dp_cmd_build_info(dp, info->snd_pid, + 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)) @@ -1535,7 +1679,7 @@ static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) __dp_destroy(dp); - genl_notify(reply, genl_info_net(info), info->snd_pid, + genl_notify(reply, genl_info_net(info), info->snd_portid, ovs_dp_datapath_multicast_group.id, info->nlhdr, GFP_KERNEL); @@ -1556,7 +1700,7 @@ static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info) if (IS_ERR(dp)) return PTR_ERR(dp); - reply = ovs_dp_cmd_build_info(dp, info->snd_pid, + 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); @@ -1565,7 +1709,7 @@ static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info) return 0; } - genl_notify(reply, genl_info_net(info), info->snd_pid, + genl_notify(reply, genl_info_net(info), info->snd_portid, ovs_dp_datapath_multicast_group.id, info->nlhdr, GFP_KERNEL); @@ -1586,7 +1730,7 @@ static int ovs_dp_cmd_get(struct sk_buff *skb, struct genl_info *info) if (IS_ERR(dp)) return PTR_ERR(dp); - reply = ovs_dp_cmd_build_info(dp, info->snd_pid, + 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); @@ -1603,7 +1747,7 @@ static int ovs_dp_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) list_for_each_entry(dp, &ovs_net->dps, list_node) { if (i >= skip && - ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).pid, + ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NLM_F_MULTI, OVS_DP_CMD_NEW) < 0) break; @@ -1669,13 +1813,13 @@ struct genl_multicast_group ovs_dp_vport_multicast_group = { /* Called with RTNL lock or RCU read lock. */ static int ovs_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb, - u32 pid, u32 seq, u32 flags, u8 cmd) + u32 portid, u32 seq, u32 flags, u8 cmd) { struct ovs_header *ovs_header; struct ovs_vport_stats vport_stats; int err; - ovs_header = genlmsg_put(skb, pid, seq, &dp_vport_genl_family, + ovs_header = genlmsg_put(skb, portid, seq, &dp_vport_genl_family, flags, cmd); if (!ovs_header) return -EMSGSIZE; @@ -1685,7 +1829,7 @@ static int ovs_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb, 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_pid)) + nla_put_u32(skb, OVS_VPORT_ATTR_UPCALL_PID, vport->upcall_portid)) goto nla_put_failure; ovs_vport_get_stats(vport, &vport_stats); @@ -1711,7 +1855,7 @@ error: } /* Called with RTNL lock or RCU read lock. */ -struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, u32 pid, +struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, u32 portid, u32 seq, u8 cmd) { struct sk_buff *skb; @@ -1721,7 +1865,7 @@ struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, u32 pid, if (!skb) return ERR_PTR(-ENOMEM); - retval = ovs_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); @@ -1762,7 +1906,7 @@ static struct vport *lookup_vport(struct net *net, vport = ovs_vport_rtnl_rcu(dp, port_no); if (!vport) - return ERR_PTR(-ENOENT); + return ERR_PTR(-ENODEV); return vport; } else return ERR_PTR(-EINVAL); @@ -1837,18 +1981,16 @@ static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info) parms.options = a[OVS_VPORT_ATTR_OPTIONS]; parms.dp = dp; parms.port_no = port_no; - parms.upcall_pid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]); + 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; - ovs_dp_sysfs_add_if(vport); - err = change_vport(vport, a); if (!err) { - reply = ovs_vport_cmd_build_info(vport, info->snd_pid, + reply = ovs_vport_cmd_build_info(vport, info->snd_portid, info->snd_seq, OVS_VPORT_CMD_NEW); if (IS_ERR(reply)) @@ -1858,7 +2000,7 @@ static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info) ovs_dp_detach_port(vport); goto exit_unlock; } - genl_notify(reply, genl_info_net(info), info->snd_pid, + genl_notify(reply, genl_info_net(info), info->snd_portid, ovs_dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL); exit_unlock: @@ -1896,17 +2038,17 @@ static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info) else goto exit_unlock; if (!err && a[OVS_VPORT_ATTR_UPCALL_PID]) - vport->upcall_pid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]); + vport->upcall_portid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]); - reply = ovs_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq, - OVS_VPORT_CMD_NEW); + reply = ovs_vport_cmd_build_info(vport, info->snd_portid, + info->snd_seq, OVS_VPORT_CMD_NEW); if (IS_ERR(reply)) { 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, + genl_notify(reply, genl_info_net(info), info->snd_portid, ovs_dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL); exit_unlock: @@ -1937,15 +2079,15 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info) goto exit_unlock; } - reply = ovs_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq, - OVS_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; ovs_dp_detach_port(vport); - genl_notify(reply, genl_info_net(info), info->snd_pid, + genl_notify(reply, genl_info_net(info), info->snd_portid, ovs_dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL); exit_unlock: @@ -1972,8 +2114,8 @@ static int ovs_vport_cmd_get(struct sk_buff *skb, struct genl_info *info) if (IS_ERR(vport)) goto exit_unlock; - reply = ovs_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq, - OVS_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; @@ -2008,7 +2150,7 @@ static int ovs_vport_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) 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).pid, + NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NLM_F_MULTI, OVS_VPORT_CMD_NEW) < 0) @@ -2176,10 +2318,9 @@ static struct pernet_operations ovs_net_ops = { static int __init dp_init(void) { - struct sk_buff *dummy_skb; int err; - BUILD_BUG_ON(sizeof(struct ovs_skb_cb) > sizeof(dummy_skb->cb)); + BUILD_BUG_ON(sizeof(struct ovs_skb_cb) > FIELD_SIZEOF(struct sk_buff, cb)); pr_info("Open vSwitch switching datapath %s, built "__DATE__" "__TIME__"\n", VERSION);