@@ -1269,6 +1269,27 @@ static int alb_set_mac_address(struct bonding *bond, void *addr)
return res;
}
+/* determine if the packet is NA or NS */
+static bool alb_determine_nd(struct sk_buff *skb, struct bonding *bond)
+{
+ struct ipv6hdr *ip6hdr;
+ struct icmp6hdr *hdr;
+
+ if (!pskb_network_may_pull(skb, sizeof(*ip6hdr)))
+ return true;
+
+ ip6hdr = ipv6_hdr(skb);
+ if (ip6hdr->nexthdr != IPPROTO_ICMPV6)
+ return false;
+
+ if (!pskb_network_may_pull(skb, sizeof(*ip6hdr) + sizeof(*hdr)))
+ return true;
+
+ hdr = icmp6_hdr(skb);
+ return hdr->icmp6_type == NDISC_NEIGHBOUR_ADVERTISEMENT ||
+ hdr->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION;
+}
+
/************************ exported alb functions ************************/
int bond_alb_initialize(struct bonding *bond, int rlb_enabled)
@@ -1348,8 +1369,11 @@ struct slave *bond_xmit_tlb_slave_get(struct bonding *bond,
/* Do not TX balance any multicast or broadcast */
if (!is_multicast_ether_addr(eth_data->h_dest)) {
switch (skb->protocol) {
- case htons(ETH_P_IP):
case htons(ETH_P_IPV6):
+ if (alb_determine_nd(skb, bond))
+ break;
+ fallthrough;
+ case htons(ETH_P_IP):
hash_index = bond_xmit_hash(bond, skb);
if (bond->params.tlb_dynamic_lb) {
tx_slave = tlb_choose_channel(bond,
@@ -1432,10 +1456,12 @@ struct slave *bond_xmit_alb_slave_get(struct bonding *bond,
break;
}
- if (!pskb_network_may_pull(skb, sizeof(*ip6hdr))) {
+ if (alb_determine_nd(skb, bond)) {
do_tx_balance = false;
break;
}
+
+ /* The IPv6 header is pulled by alb_determine_nd */
/* Additionally, DAD probes should not be tx-balanced as that
* will lead to false positives for duplicate addresses and
* prevent address configuration from working.