diff options
Diffstat (limited to 'net/openvswitch/datapath.c')
-rw-r--r-- | net/openvswitch/datapath.c | 86 |
1 files changed, 62 insertions, 24 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index ffe984f..ec0f8d9 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -275,6 +275,7 @@ void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key) memset(&upcall, 0, sizeof(upcall)); upcall.cmd = OVS_PACKET_CMD_MISS; upcall.portid = ovs_vport_find_upcall_portid(p, skb); + upcall.mru = OVS_CB(skb)->mru; error = ovs_dp_upcall(dp, skb, key, &upcall); if (unlikely(error)) kfree_skb(skb); @@ -400,9 +401,23 @@ static size_t upcall_msg_size(const struct dp_upcall_info *upcall_info, if (upcall_info->actions_len) size += nla_total_size(upcall_info->actions_len); + /* OVS_PACKET_ATTR_MRU */ + if (upcall_info->mru) + size += nla_total_size(sizeof(upcall_info->mru)); + return size; } +static void pad_packet(struct datapath *dp, struct sk_buff *skb) +{ + if (!(dp->user_features & OVS_DP_F_UNALIGNED)) { + size_t plen = NLA_ALIGN(skb->len) - skb->len; + + if (plen > 0) + memset(skb_put(skb, plen), 0, plen); + } +} + static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb, const struct sw_flow_key *key, const struct dp_upcall_info *upcall_info) @@ -492,6 +507,16 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb, nla_nest_cancel(user_skb, nla); } + /* Add OVS_PACKET_ATTR_MRU */ + if (upcall_info->mru) { + if (nla_put_u16(user_skb, OVS_PACKET_ATTR_MRU, + upcall_info->mru)) { + err = -ENOBUFS; + goto out; + } + pad_packet(dp, user_skb); + } + /* Only reserve room for attribute header, packet data is added * in skb_zerocopy() */ if (!(nla = nla_reserve(user_skb, OVS_PACKET_ATTR_PACKET, 0))) { @@ -505,12 +530,7 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb, goto out; /* Pad OVS_PACKET_ATTR_PACKET if linear copy was performed */ - if (!(dp->user_features & OVS_DP_F_UNALIGNED)) { - size_t plen = NLA_ALIGN(user_skb->len) - user_skb->len; - - if (plen > 0) - memset(skb_put(user_skb, plen), 0, plen); - } + pad_packet(dp, user_skb); ((struct nlmsghdr *) user_skb->data)->nlmsg_len = user_skb->len; @@ -527,6 +547,7 @@ out: static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) { struct ovs_header *ovs_header = info->userhdr; + struct net *net = sock_net(skb->sk); struct nlattr **a = info->attrs; struct sw_flow_actions *acts; struct sk_buff *packet; @@ -535,6 +556,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) struct datapath *dp; struct ethhdr *eth; struct vport *input_vport; + u16 mru = 0; int len; int err; bool log = !a[OVS_PACKET_ATTR_PROBE]; @@ -564,18 +586,25 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) else packet->protocol = htons(ETH_P_802_2); + /* Set packet's mru */ + if (a[OVS_PACKET_ATTR_MRU]) { + mru = nla_get_u16(a[OVS_PACKET_ATTR_MRU]); + packet->ignore_df = 1; + } + OVS_CB(packet)->mru = mru; + /* Build an sw_flow for sending this packet. */ flow = ovs_flow_alloc(); err = PTR_ERR(flow); if (IS_ERR(flow)) goto err_kfree_skb; - err = ovs_flow_key_extract_userspace(a[OVS_PACKET_ATTR_KEY], packet, - &flow->key, log); + err = ovs_flow_key_extract_userspace(net, a[OVS_PACKET_ATTR_KEY], + packet, &flow->key, log); if (err) goto err_flow_free; - err = ovs_nla_copy_actions(a[OVS_PACKET_ATTR_ACTIONS], + err = ovs_nla_copy_actions(net, a[OVS_PACKET_ATTR_ACTIONS], &flow->key, &acts, log); if (err) goto err_flow_free; @@ -586,7 +615,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) packet->mark = flow->key.phy.skb_mark; rcu_read_lock(); - dp = get_dp_rcu(sock_net(skb->sk), ovs_header->dp_ifindex); + dp = get_dp_rcu(net, ovs_header->dp_ifindex); err = -ENODEV; if (!dp) goto err_unlock; @@ -598,6 +627,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) if (!input_vport) goto err_unlock; + packet->dev = input_vport->dev; OVS_CB(packet)->input_vport = input_vport; sf_acts = rcu_dereference(flow->sf_acts); @@ -624,6 +654,7 @@ static const struct nla_policy packet_policy[OVS_PACKET_ATTR_MAX + 1] = { [OVS_PACKET_ATTR_KEY] = { .type = NLA_NESTED }, [OVS_PACKET_ATTR_ACTIONS] = { .type = NLA_NESTED }, [OVS_PACKET_ATTR_PROBE] = { .type = NLA_FLAG }, + [OVS_PACKET_ATTR_MRU] = { .type = NLA_U16 }, }; static const struct genl_ops dp_packet_genl_ops[] = { @@ -713,7 +744,7 @@ static size_t ovs_flow_cmd_msg_size(const struct sw_flow_actions *acts, /* OVS_FLOW_ATTR_ACTIONS */ if (should_fill_actions(ufid_flags)) - len += nla_total_size(acts->actions_len); + len += nla_total_size(acts->orig_len); return len + nla_total_size(sizeof(struct ovs_flow_stats)) /* OVS_FLOW_ATTR_STATS */ @@ -880,6 +911,7 @@ static struct sk_buff *ovs_flow_cmd_build_info(const struct sw_flow *flow, static int ovs_flow_cmd_new(struct sk_buff *skb, struct genl_info *info) { + struct net *net = sock_net(skb->sk); struct nlattr **a = info->attrs; struct ovs_header *ovs_header = info->userhdr; struct sw_flow *flow = NULL, *new_flow; @@ -915,7 +947,7 @@ static int ovs_flow_cmd_new(struct sk_buff *skb, struct genl_info *info) /* Extract key. */ ovs_match_init(&match, &key, &mask); - error = ovs_nla_get_match(&match, a[OVS_FLOW_ATTR_KEY], + error = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], a[OVS_FLOW_ATTR_MASK], log); if (error) goto err_kfree_flow; @@ -929,8 +961,8 @@ static int ovs_flow_cmd_new(struct sk_buff *skb, struct genl_info *info) goto err_kfree_flow; /* Validate actions. */ - error = ovs_nla_copy_actions(a[OVS_FLOW_ATTR_ACTIONS], &new_flow->key, - &acts, log); + error = ovs_nla_copy_actions(net, a[OVS_FLOW_ATTR_ACTIONS], + &new_flow->key, &acts, log); if (error) { OVS_NLERR(log, "Flow actions may not be safe on all matching packets."); goto err_kfree_flow; @@ -944,7 +976,7 @@ static int ovs_flow_cmd_new(struct sk_buff *skb, struct genl_info *info) } ovs_lock(); - dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); + dp = get_dp(net, ovs_header->dp_ifindex); if (unlikely(!dp)) { error = -ENODEV; goto err_unlock_ovs; @@ -1038,7 +1070,8 @@ error: } /* Factor out action copy to avoid "Wframe-larger-than=1024" warning. */ -static struct sw_flow_actions *get_flow_actions(const struct nlattr *a, +static struct sw_flow_actions *get_flow_actions(struct net *net, + const struct nlattr *a, const struct sw_flow_key *key, const struct sw_flow_mask *mask, bool log) @@ -1048,7 +1081,7 @@ static struct sw_flow_actions *get_flow_actions(const struct nlattr *a, int error; ovs_flow_mask_key(&masked_key, key, mask); - error = ovs_nla_copy_actions(a, &masked_key, &acts, log); + error = ovs_nla_copy_actions(net, a, &masked_key, &acts, log); if (error) { OVS_NLERR(log, "Actions may not be safe on all matching packets"); @@ -1060,6 +1093,7 @@ static struct sw_flow_actions *get_flow_actions(const struct nlattr *a, static int ovs_flow_cmd_set(struct sk_buff *skb, struct genl_info *info) { + struct net *net = sock_net(skb->sk); struct nlattr **a = info->attrs; struct ovs_header *ovs_header = info->userhdr; struct sw_flow_key key; @@ -1084,15 +1118,15 @@ static int ovs_flow_cmd_set(struct sk_buff *skb, struct genl_info *info) ufid_present = ovs_nla_get_ufid(&sfid, a[OVS_FLOW_ATTR_UFID], log); ovs_match_init(&match, &key, &mask); - error = ovs_nla_get_match(&match, a[OVS_FLOW_ATTR_KEY], + error = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], a[OVS_FLOW_ATTR_MASK], log); if (error) goto error; /* Validate actions. */ if (a[OVS_FLOW_ATTR_ACTIONS]) { - acts = get_flow_actions(a[OVS_FLOW_ATTR_ACTIONS], &key, &mask, - log); + acts = get_flow_actions(net, a[OVS_FLOW_ATTR_ACTIONS], &key, + &mask, log); if (IS_ERR(acts)) { error = PTR_ERR(acts); goto error; @@ -1108,7 +1142,7 @@ static int ovs_flow_cmd_set(struct sk_buff *skb, struct genl_info *info) } ovs_lock(); - dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); + dp = get_dp(net, ovs_header->dp_ifindex); if (unlikely(!dp)) { error = -ENODEV; goto err_unlock_ovs; @@ -1174,6 +1208,7 @@ static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info) { struct nlattr **a = info->attrs; struct ovs_header *ovs_header = info->userhdr; + struct net *net = sock_net(skb->sk); struct sw_flow_key key; struct sk_buff *reply; struct sw_flow *flow; @@ -1188,7 +1223,7 @@ static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info) ufid_present = ovs_nla_get_ufid(&ufid, a[OVS_FLOW_ATTR_UFID], log); if (a[OVS_FLOW_ATTR_KEY]) { ovs_match_init(&match, &key, NULL); - err = ovs_nla_get_match(&match, a[OVS_FLOW_ATTR_KEY], NULL, + err = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], NULL, log); } else if (!ufid_present) { OVS_NLERR(log, @@ -1232,6 +1267,7 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info) { struct nlattr **a = info->attrs; struct ovs_header *ovs_header = info->userhdr; + struct net *net = sock_net(skb->sk); struct sw_flow_key key; struct sk_buff *reply; struct sw_flow *flow = NULL; @@ -1246,8 +1282,8 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info) ufid_present = ovs_nla_get_ufid(&ufid, a[OVS_FLOW_ATTR_UFID], log); if (a[OVS_FLOW_ATTR_KEY]) { ovs_match_init(&match, &key, NULL); - err = ovs_nla_get_match(&match, a[OVS_FLOW_ATTR_KEY], NULL, - log); + err = ovs_nla_get_match(net, &match, a[OVS_FLOW_ATTR_KEY], + NULL, log); if (unlikely(err)) return err; } @@ -2203,6 +2239,7 @@ static int __net_init ovs_init_net(struct net *net) INIT_LIST_HEAD(&ovs_net->dps); INIT_WORK(&ovs_net->dp_notify_work, ovs_dp_notify_wq); + ovs_ct_init(net); return 0; } @@ -2237,6 +2274,7 @@ static void __net_exit ovs_exit_net(struct net *dnet) struct net *net; LIST_HEAD(head); + ovs_ct_exit(dnet); ovs_lock(); list_for_each_entry_safe(dp, dp_next, &ovs_net->dps, list_node) __dp_destroy(dp); |