diff options
| -rw-r--r-- | net/openvswitch/datapath.c | 35 | ||||
| -rw-r--r-- | net/openvswitch/vport.c | 3 |
2 files changed, 36 insertions, 2 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index e209099218b4..bbbde50fc649 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -2184,9 +2184,40 @@ error: return err; } +static size_t ovs_vport_cmd_msg_size(void) +{ + size_t msgsize = NLMSG_ALIGN(sizeof(struct ovs_header)); + + msgsize += nla_total_size(sizeof(u32)); /* OVS_VPORT_ATTR_PORT_NO */ + msgsize += nla_total_size(sizeof(u32)); /* OVS_VPORT_ATTR_TYPE */ + msgsize += nla_total_size(IFNAMSIZ); /* OVS_VPORT_ATTR_NAME */ + msgsize += nla_total_size(sizeof(u32)); /* OVS_VPORT_ATTR_IFINDEX */ + msgsize += nla_total_size(sizeof(s32)); /* OVS_VPORT_ATTR_NETNSID */ + + /* OVS_VPORT_ATTR_STATS */ + msgsize += nla_total_size_64bit(sizeof(struct ovs_vport_stats)); + + /* OVS_VPORT_ATTR_UPCALL_STATS(OVS_VPORT_UPCALL_ATTR_SUCCESS + + * OVS_VPORT_UPCALL_ATTR_FAIL) + */ + msgsize += nla_total_size(nla_total_size_64bit(sizeof(u64)) + + nla_total_size_64bit(sizeof(u64))); + + /* OVS_VPORT_ATTR_UPCALL_PID */ + msgsize += nla_total_size(nr_cpu_ids * sizeof(u32)); + + /* OVS_VPORT_ATTR_OPTIONS(OVS_TUNNEL_ATTR_DST_PORT + + * OVS_TUNNEL_ATTR_EXTENSION(OVS_VXLAN_EXT_GBP)) + */ + msgsize += nla_total_size(nla_total_size(sizeof(u16)) + + nla_total_size(nla_total_size(0))); + + return msgsize; +} + static struct sk_buff *ovs_vport_cmd_alloc_info(void) { - return nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + return genlmsg_new(ovs_vport_cmd_msg_size(), GFP_KERNEL); } /* Called with ovs_mutex, only via ovs_dp_notify_wq(). */ @@ -2196,7 +2227,7 @@ struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, struct net *net, struct sk_buff *skb; int retval; - skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + skb = ovs_vport_cmd_alloc_info(); if (!skb) return ERR_PTR(-ENOMEM); diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c index 23f629e94a36..56b2e2d1a749 100644 --- a/net/openvswitch/vport.c +++ b/net/openvswitch/vport.c @@ -406,6 +406,9 @@ int ovs_vport_set_upcall_portids(struct vport *vport, const struct nlattr *ids) if (!nla_len(ids) || nla_len(ids) % sizeof(u32)) return -EINVAL; + if (nla_len(ids) / sizeof(u32) > nr_cpu_ids) + return -EINVAL; + old = ovsl_dereference(vport->upcall_portids); vport_portids = kmalloc(sizeof(*vport_portids) + nla_len(ids), |