developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 1 | diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 2 | index 9e8a5c4..9104255 100644 |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 3 | --- a/net/openvswitch/actions.c |
| 4 | +++ b/net/openvswitch/actions.c |
| 5 | @@ -919,6 +919,10 @@ static void do_output(struct datapath *dp, struct sk_buff *skb, int out_port, |
| 6 | struct sw_flow_key *key) |
| 7 | { |
| 8 | struct vport *vport = ovs_vport_rcu(dp, out_port); |
| 9 | + struct multicast_data_base *mdb; |
| 10 | + struct multicast_table *table; |
| 11 | + struct multicast_table_entry *entry; |
| 12 | + struct sk_buff *skb_cpy; |
| 13 | |
| 14 | if (likely(vport)) { |
| 15 | u16 mru = OVS_CB(skb)->mru; |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 16 | @@ -933,7 +937,31 @@ static void do_output(struct datapath *dp, struct sk_buff *skb, int out_port, |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 17 | |
| 18 | if (likely(!mru || |
| 19 | (skb->len <= mru + vport->dev->hard_header_len))) { |
| 20 | - ovs_vport_send(vport, skb, ovs_key_mac_proto(key)); |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 21 | + if (is_multicast_addr(skb) && !is_igmp_mld(skb)) { |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 22 | + mdb = vport->mdb; |
| 23 | + spin_lock(&mdb->tbl_lock); |
| 24 | + list_for_each_entry(table, &mdb->list_head, mdb_node) { |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 25 | + if ((key->eth.type == htons(ETH_P_IP) && |
| 26 | + table->group_addr.u.ip4 == key->ipv4.addr.dst) || |
| 27 | + (key->eth.type == htons(ETH_P_IPV6) && |
| 28 | + ipv6_addr_equal(&table->group_addr.u.ip6, &key->ipv6.addr.dst))) { |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 29 | + list_for_each_entry(entry, &table->entry_list, entry_node) { |
| 30 | + skb_cpy = skb_copy(skb, GFP_ATOMIC); |
| 31 | + if (!skb_cpy) { |
| 32 | + kfree_skb(skb); |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 33 | + pr_err("%s(): skb copy error\n", __func__); |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 34 | + spin_unlock(&mdb->tbl_lock); |
| 35 | + return; |
| 36 | + } |
| 37 | + memcpy(skb_cpy->data, entry->eth_addr, ETH_ALEN); |
| 38 | + ovs_vport_send(vport, skb_cpy, ovs_key_mac_proto(key)); |
| 39 | + } |
| 40 | + } |
| 41 | + } |
| 42 | + spin_unlock(&mdb->tbl_lock); |
| 43 | + kfree_skb(skb); |
| 44 | + } else |
| 45 | + ovs_vport_send(vport, skb, ovs_key_mac_proto(key)); |
| 46 | } else if (mru <= vport->dev->mtu) { |
| 47 | struct net *net = read_pnet(&dp->net); |
| 48 | |
| 49 | diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 50 | index 4f097bd..2f39f07 100644 |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 51 | --- a/net/openvswitch/datapath.c |
| 52 | +++ b/net/openvswitch/datapath.c |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 53 | @@ -11,6 +11,9 @@ |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 54 | #include <linux/if_vlan.h> |
| 55 | #include <linux/in.h> |
| 56 | #include <linux/ip.h> |
| 57 | +#include <linux/igmp.h> |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 58 | +#include <net/mld.h> |
| 59 | +#include <linux/icmpv6.h> |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 60 | #include <linux/jhash.h> |
| 61 | #include <linux/delay.h> |
| 62 | #include <linux/time.h> |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 63 | @@ -530,6 +533,262 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb, |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 64 | return err; |
| 65 | } |
| 66 | |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 67 | +static int ovs_multicast_add_group(struct ip_addr *_group_addr, |
| 68 | + const u8 *entry_addr, |
| 69 | + struct vport *input_vport) |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 70 | +{ |
| 71 | + struct multicast_data_base *mdb; |
| 72 | + struct multicast_table *table; |
| 73 | + struct multicast_table_entry *entry; |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 74 | + int err; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 75 | + |
| 76 | + mdb = input_vport->mdb; |
| 77 | + spin_lock(&mdb->tbl_lock); |
| 78 | + list_for_each_entry(table, &mdb->list_head, mdb_node) { |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 79 | + if (!memcmp(&table->group_addr.u, &_group_addr->u, sizeof(struct ip_addr))) { |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 80 | + list_for_each_entry(entry, &table->entry_list, entry_node) { |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 81 | + if (ether_addr_equal(entry->eth_addr, entry_addr)) |
| 82 | + goto out; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 83 | + } |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 84 | + |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 85 | + entry = kzalloc(sizeof(struct multicast_table_entry), GFP_ATOMIC); |
| 86 | + if (!entry) { |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 87 | + err = -ENOMEM; |
| 88 | + goto err; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 89 | + } |
| 90 | + |
| 91 | + memcpy(entry->eth_addr, entry_addr, ETH_ALEN); |
| 92 | + list_add(&entry->entry_node, &table->entry_list); |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 93 | + goto out; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 94 | + } |
| 95 | + } |
| 96 | + |
| 97 | + table = kzalloc(sizeof(struct multicast_table), GFP_ATOMIC); |
| 98 | + if (!table) { |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 99 | + err = -ENOMEM; |
| 100 | + goto err; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 101 | + } |
| 102 | + |
| 103 | + INIT_LIST_HEAD(&table->entry_list); |
| 104 | + entry = kzalloc(sizeof(struct multicast_table_entry), GFP_ATOMIC); |
| 105 | + if (!entry) { |
| 106 | + kfree(table); |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 107 | + err = -ENOMEM; |
| 108 | + goto err; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 109 | + } |
| 110 | + |
| 111 | + memcpy(entry->eth_addr, entry_addr, ETH_ALEN); |
| 112 | + list_add(&entry->entry_node, &table->entry_list); |
| 113 | + |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 114 | + table->group_addr.u = _group_addr->u; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 115 | + list_add(&table->mdb_node, &mdb->list_head); |
| 116 | + |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 117 | +out: |
| 118 | + err = 0; |
| 119 | +err: |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 120 | + spin_unlock(&mdb->tbl_lock); |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 121 | + return err; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 122 | +} |
| 123 | + |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 124 | +static int ovs_multicast_leave_group(struct ip_addr *_group_addr, |
| 125 | + const u8 *entry_addr, |
| 126 | + struct vport *input_vport) |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 127 | +{ |
| 128 | + struct multicast_data_base *mdb; |
| 129 | + struct multicast_table *table, *table_tmp; |
| 130 | + struct multicast_table_entry *entry, *entry_tmp; |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 131 | + int err; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 132 | + |
| 133 | + mdb = input_vport->mdb; |
| 134 | + spin_lock(&mdb->tbl_lock); |
| 135 | + list_for_each_entry_safe(table, table_tmp, &mdb->list_head, mdb_node) { |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 136 | + if (!memcmp(&table->group_addr.u, &_group_addr->u, sizeof(struct ip_addr))) { |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 137 | + list_for_each_entry_safe(entry, entry_tmp, &table->entry_list, entry_node) { |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 138 | + if (ether_addr_equal(entry->eth_addr, entry_addr)) { |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 139 | + list_del(&entry->entry_node); |
| 140 | + kfree(entry); |
| 141 | + |
| 142 | + if (list_empty(&table->entry_list)) { |
| 143 | + list_del(&table->mdb_node); |
| 144 | + kfree(table); |
| 145 | + } |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 146 | + |
| 147 | + goto out; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 148 | + } |
| 149 | + } |
| 150 | + } |
| 151 | + } |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 152 | + |
| 153 | +out: |
| 154 | + err = 0; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 155 | + spin_unlock(&mdb->tbl_lock); |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 156 | + return err; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 157 | +} |
| 158 | + |
| 159 | +static int ovs_multicast_ipv4_rcv(struct sk_buff *skb, struct vport *input_vport) |
| 160 | +{ |
| 161 | + struct ethhdr *eth_hdr; |
| 162 | + const u8 *dl_src; |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 163 | + struct ip_addr group_addr = {0}; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 164 | + struct iphdr *ip_header; |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 165 | + struct igmphdr *igmp_header; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 166 | + int i; |
| 167 | + struct igmpv3_report *igmpv3_hdr; |
| 168 | + u16 group_num; |
| 169 | + struct igmpv3_grec *grec; |
| 170 | + u8 group_type; |
| 171 | + u8 aux_data_len; |
| 172 | + u16 num_of_source; |
| 173 | + int err; |
| 174 | + |
| 175 | + err = ip_mc_check_igmp(skb); |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 176 | + if (err) |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 177 | + return 0; |
| 178 | + |
| 179 | + eth_hdr = skb_eth_hdr(skb); |
| 180 | + dl_src = eth_hdr->h_source; |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 181 | + ip_header = ip_hdr(skb); |
| 182 | + igmp_header = igmp_hdr(skb); |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 183 | + |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 184 | + switch (igmp_header->type) { |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 185 | + case IGMP_HOST_MEMBERSHIP_REPORT: |
| 186 | + case IGMPV2_HOST_MEMBERSHIP_REPORT: |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 187 | + group_addr.u.ip4 = igmp_header->group; |
| 188 | + if (ipv4_is_local_multicast(group_addr.u.ip4)) |
| 189 | + return 0; |
| 190 | + ovs_multicast_add_group(&group_addr, dl_src, input_vport); |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 191 | + break; |
| 192 | + case IGMP_HOST_LEAVE_MESSAGE: |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 193 | + group_addr.u.ip4 = igmp_header->group; |
| 194 | + if (ipv4_is_local_multicast(group_addr.u.ip4)) |
| 195 | + return 0; |
| 196 | + ovs_multicast_leave_group(&group_addr, dl_src, input_vport); |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 197 | + break; |
| 198 | + case IGMPV3_HOST_MEMBERSHIP_REPORT: |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 199 | + igmpv3_hdr = (struct igmpv3_report *)igmp_header; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 200 | + group_num = ntohs(igmpv3_hdr->ngrec); |
| 201 | + grec = igmpv3_hdr->grec; |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 202 | + |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 203 | + for (i = 0; i < group_num; i++) { |
| 204 | + group_type = grec->grec_type; |
| 205 | + aux_data_len = grec->grec_auxwords; |
| 206 | + num_of_source = ntohs(grec->grec_nsrcs); |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 207 | + group_addr.u.ip4 = grec->grec_mca; |
| 208 | + if (ipv4_is_local_multicast(group_addr.u.ip4)) |
| 209 | + return 0; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 210 | + |
| 211 | + if (group_type == IGMPV3_MODE_IS_EXCLUDE || |
| 212 | + group_type == IGMPV3_CHANGE_TO_EXCLUDE || |
| 213 | + group_type == IGMPV3_ALLOW_NEW_SOURCES) |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 214 | + ovs_multicast_add_group(&group_addr, dl_src, input_vport); |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 215 | + |
| 216 | + if (group_type == IGMPV3_MODE_IS_INCLUDE || |
| 217 | + group_type == IGMPV3_CHANGE_TO_INCLUDE || |
| 218 | + group_type == IGMPV3_BLOCK_OLD_SOURCES) |
| 219 | + if (num_of_source == 0) |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 220 | + ovs_multicast_leave_group(&group_addr, dl_src, input_vport); |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 221 | + |
| 222 | + grec += (8 + (num_of_source * 4) + aux_data_len); |
| 223 | + } |
| 224 | + break; |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 225 | + case IGMP_HOST_MEMBERSHIP_QUERY: |
| 226 | + break; |
| 227 | + default: |
| 228 | + pr_warning("%s(): error packet type 0x%x\n", __func__, igmp_header->type); |
| 229 | + break; |
| 230 | + } |
| 231 | + return 0; |
| 232 | +} |
| 233 | + |
| 234 | +static int ovs_multicast_ipv6_rcv(struct sk_buff *skb, struct vport *input_vport) |
| 235 | +{ |
| 236 | + const u8 *dl_src; |
| 237 | + struct mld_msg *mld_hdr; |
| 238 | + struct ip_addr group_addr = {0}; |
| 239 | + struct icmp6hdr *icmpv6_hdr; |
| 240 | + u16 group_num; |
| 241 | + struct mld2_grec *grec; |
| 242 | + u8 group_type; |
| 243 | + u8 aux_data_len; |
| 244 | + u16 num_of_source; |
| 245 | + int i; |
| 246 | + int err; |
| 247 | + |
| 248 | + err = ipv6_mc_check_mld(skb); |
| 249 | + if (err) |
| 250 | + return err; |
| 251 | + |
| 252 | + mld_hdr = (struct mld_msg *)skb_transport_header(skb); |
| 253 | + dl_src = skb_eth_hdr(skb)->h_source; |
| 254 | + |
| 255 | + switch (mld_hdr->mld_type) { |
| 256 | + case ICMPV6_MGM_REPORT: |
| 257 | + group_addr.u.ip6 = mld_hdr->mld_mca; |
| 258 | + if (ipv6_addr_is_ll_all_nodes(&group_addr.u.ip6)) |
| 259 | + return 0; |
| 260 | + ovs_multicast_add_group(&group_addr, dl_src, input_vport); |
| 261 | + break; |
| 262 | + case ICMPV6_MGM_REDUCTION: |
| 263 | + group_addr.u.ip6 = mld_hdr->mld_mca; |
| 264 | + if (ipv6_addr_is_ll_all_nodes(&group_addr.u.ip6)) |
| 265 | + return 0; |
| 266 | + ovs_multicast_leave_group(&group_addr, dl_src, input_vport); |
| 267 | + break; |
| 268 | + case ICMPV6_MLD2_REPORT: |
| 269 | + icmpv6_hdr = icmp6_hdr(skb); |
| 270 | + group_num = ntohs(icmpv6_hdr->icmp6_dataun.un_data16[1]); |
| 271 | + grec = (struct mld2_grec *)(skb_transport_header(skb) + sizeof(struct icmp6hdr)); |
| 272 | + |
| 273 | + for (i = 0; i < group_num; i++) { |
| 274 | + group_type = grec->grec_type; |
| 275 | + aux_data_len = grec->grec_auxwords; |
| 276 | + num_of_source = ntohs(grec->grec_nsrcs); |
| 277 | + group_addr.u.ip6 = grec->grec_mca; |
| 278 | + if (ipv6_addr_is_ll_all_nodes(&group_addr.u.ip6)) |
| 279 | + return 0; |
| 280 | + |
| 281 | + if (group_type == MLD2_MODE_IS_EXCLUDE || |
| 282 | + group_type == MLD2_CHANGE_TO_EXCLUDE || |
| 283 | + group_type == MLD2_ALLOW_NEW_SOURCES) |
| 284 | + ovs_multicast_add_group(&group_addr, dl_src, input_vport); |
| 285 | + else if ((group_type == MLD2_MODE_IS_INCLUDE || |
| 286 | + group_type == MLD2_CHANGE_TO_INCLUDE || |
| 287 | + group_type == MLD2_BLOCK_OLD_SOURCES) && |
| 288 | + num_of_source == 0) |
| 289 | + ovs_multicast_leave_group(&group_addr, dl_src, input_vport); |
| 290 | + |
| 291 | + grec += (4 + (num_of_source + 1) * sizeof(struct in6_addr) + aux_data_len); |
| 292 | + } |
| 293 | + break; |
| 294 | + case ICMPV6_MGM_QUERY: |
| 295 | + break; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 296 | + default: |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 297 | + pr_warning("%s(): error packet type 0x%x\n", __func__, mld_hdr->mld_type); |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 298 | + break; |
| 299 | + } |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 300 | + |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 301 | + return 0; |
| 302 | +} |
| 303 | + |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 304 | +static int ovs_multicast_rcv(struct sk_buff *skb, struct vport *input_vport) |
| 305 | +{ |
| 306 | + int ret = 0; |
| 307 | + |
| 308 | + if (!skb) |
| 309 | + return -EINVAL; |
| 310 | + |
| 311 | + switch (skb->protocol) { |
| 312 | + case htons(ETH_P_IP): |
| 313 | + ret = ovs_multicast_ipv4_rcv(skb, input_vport); |
| 314 | + break; |
| 315 | + case htons(ETH_P_IPV6): |
| 316 | + ret = ovs_multicast_ipv6_rcv(skb, input_vport); |
| 317 | + break; |
| 318 | + } |
| 319 | + |
| 320 | + return ret; |
| 321 | +} |
| 322 | + |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 323 | static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) |
| 324 | { |
| 325 | struct ovs_header *ovs_header = info->userhdr; |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 326 | @@ -604,6 +863,9 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 327 | OVS_CB(packet)->input_vport = input_vport; |
| 328 | sf_acts = rcu_dereference(flow->sf_acts); |
| 329 | |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 330 | + if (is_multicast_addr(packet)) |
| 331 | + ovs_multicast_rcv(packet, input_vport); |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 332 | + |
| 333 | local_bh_disable(); |
| 334 | err = ovs_execute_actions(dp, packet, sf_acts, &flow->key); |
| 335 | local_bh_enable(); |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 336 | @@ -2183,6 +2445,9 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info) |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 337 | struct datapath *dp; |
| 338 | struct vport *vport; |
| 339 | unsigned int new_headroom; |
| 340 | + struct multicast_data_base *mdb; |
| 341 | + struct multicast_table *table, *table_tmp; |
| 342 | + struct multicast_table_entry *entry, *entry_tmp; |
| 343 | int err; |
| 344 | |
| 345 | reply = ovs_vport_cmd_alloc_info(); |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 346 | @@ -2210,6 +2475,22 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info) |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 347 | if (netdev_get_fwd_headroom(vport->dev) == dp->max_headroom) |
| 348 | update_headroom = true; |
| 349 | |
| 350 | + mdb = vport->mdb; |
| 351 | + spin_lock(&mdb->tbl_lock); |
| 352 | + list_for_each_entry_safe(table, table_tmp, &mdb->list_head, mdb_node) { |
| 353 | + list_for_each_entry_safe(entry, entry_tmp, &table->entry_list, entry_node) { |
| 354 | + list_del(&entry->entry_node); |
| 355 | + kfree(entry); |
| 356 | + |
| 357 | + if (list_empty(&table->entry_list)) { |
| 358 | + list_del(&table->mdb_node); |
| 359 | + kfree(table); |
| 360 | + } |
| 361 | + } |
| 362 | + } |
| 363 | + spin_unlock(&mdb->tbl_lock); |
| 364 | + kfree(mdb); |
| 365 | + |
| 366 | netdev_reset_rx_headroom(vport->dev); |
| 367 | ovs_dp_detach_port(vport); |
| 368 | |
| 369 | diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 370 | index 81e85dd..6830d3b 100644 |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 371 | --- a/net/openvswitch/datapath.h |
| 372 | +++ b/net/openvswitch/datapath.h |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 373 | @@ -215,6 +215,38 @@ static inline struct datapath *get_dp(struct net *net, int dp_ifindex) |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 374 | return dp; |
| 375 | } |
| 376 | |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 377 | +static inline bool is_multicast_addr(struct sk_buff *skb) |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 378 | +{ |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 379 | + struct ethhdr *eth_hdr; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 380 | + |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 381 | + if (!skb) |
| 382 | + return 0; |
| 383 | + |
| 384 | + eth_hdr = skb_eth_hdr(skb); |
| 385 | + |
| 386 | + return (eth_hdr->h_dest[0] == 0x01 && skb->protocol == htons(ETH_P_IP)) || |
| 387 | + (eth_hdr->h_dest[0] == 0x33 && skb->protocol == htons(ETH_P_IPV6)); |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 388 | +} |
| 389 | + |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 390 | +static inline bool is_igmp_mld(struct sk_buff *skb) |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 391 | +{ |
| 392 | + struct ethhdr *eth_hdr; |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 393 | + int err = 0; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 394 | + |
| 395 | + if (!skb) |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 396 | + return err; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 397 | + |
| 398 | + eth_hdr = skb_eth_hdr(skb); |
| 399 | + |
developer | e1abd05 | 2022-11-17 14:17:21 +0800 | [diff] [blame] | 400 | + if (skb->protocol == htons(ETH_P_IP)) { |
| 401 | + err = ip_hdr(skb)->protocol == IPPROTO_IGMP; |
| 402 | + } else if (skb->protocol == htons(ETH_P_IPV6)) { |
| 403 | + err = !ipv6_mc_check_mld(skb); |
| 404 | + } |
| 405 | + |
| 406 | + return err; |
developer | 8efbb8e | 2022-10-17 22:55:12 +0800 | [diff] [blame] | 407 | +} |
| 408 | + |
| 409 | extern struct notifier_block ovs_dp_device_notifier; |
| 410 | extern struct genl_family dp_vport_genl_family; |
| 411 | |
| 412 | diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c |
| 413 | index 19af0ef..77bc923 100644 |
| 414 | --- a/net/openvswitch/vport.c |
| 415 | +++ b/net/openvswitch/vport.c |
| 416 | @@ -141,6 +141,14 @@ struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *ops, |
| 417 | return ERR_PTR(-EINVAL); |
| 418 | } |
| 419 | |
| 420 | + vport->mdb = kzalloc(sizeof(struct multicast_data_base), GFP_KERNEL); |
| 421 | + if (!vport->mdb) { |
| 422 | + kfree(vport); |
| 423 | + return ERR_PTR(-ENOMEM); |
| 424 | + } |
| 425 | + INIT_LIST_HEAD(&vport->mdb->list_head); |
| 426 | + spin_lock_init(&vport->mdb->tbl_lock); |
| 427 | + |
| 428 | return vport; |
| 429 | } |
| 430 | EXPORT_SYMBOL_GPL(ovs_vport_alloc); |
| 431 | diff --git a/net/openvswitch/vport.h b/net/openvswitch/vport.h |
| 432 | index 1eb7495..eb69d6c 100644 |
| 433 | --- a/net/openvswitch/vport.h |
| 434 | +++ b/net/openvswitch/vport.h |
| 435 | @@ -55,6 +55,30 @@ struct vport_portids { |
| 436 | u32 ids[]; |
| 437 | }; |
| 438 | |
| 439 | +struct ip_addr { |
| 440 | + union { |
| 441 | + __be32 ip4; |
| 442 | + struct in6_addr ip6; |
| 443 | + } u; |
| 444 | +}; |
| 445 | + |
| 446 | +struct multicast_table_entry { |
| 447 | + struct list_head entry_node; |
| 448 | + u8 eth_addr[ETH_ALEN]; |
| 449 | +}; |
| 450 | + |
| 451 | +struct multicast_table { |
| 452 | + struct list_head mdb_node; |
| 453 | + struct list_head entry_list; |
| 454 | + struct ip_addr group_addr; |
| 455 | +}; |
| 456 | + |
| 457 | +struct multicast_data_base { |
| 458 | + struct list_head list_head; |
| 459 | + spinlock_t tbl_lock; |
| 460 | +}; |
| 461 | + |
| 462 | + |
| 463 | /** |
| 464 | * struct vport - one port within a datapath |
| 465 | * @dev: Pointer to net_device. |
| 466 | @@ -79,6 +103,8 @@ struct vport { |
| 467 | |
| 468 | struct list_head detach_list; |
| 469 | struct rcu_head rcu; |
| 470 | + |
| 471 | + struct multicast_data_base *mdb; |
| 472 | }; |
| 473 | |
| 474 | /** |