diff options
Diffstat (limited to 'drivers/net/amt.c')
| -rw-r--r-- | drivers/net/amt.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/net/amt.c b/drivers/net/amt.c index 2d007c5c5463..8dc7b8f258c8 100644 --- a/drivers/net/amt.c +++ b/drivers/net/amt.c @@ -967,8 +967,11 @@ static void amt_event_send_request(struct amt_dev *amt) goto out; } - if (!amt->req_cnt) + if (!amt->req_cnt) { + WRITE_ONCE(amt->ready4, false); + WRITE_ONCE(amt->ready6, false); get_random_bytes(&amt->nonce, sizeof(__be32)); + } amt_send_request(amt, false); amt_send_request(amt, true); @@ -2353,6 +2356,9 @@ static bool amt_membership_query_handler(struct amt_dev *amt, if (amtmq->reserved || amtmq->version) return true; + if (amtmq->nonce != amt->nonce) + return true; + hdr_size -= sizeof(*eth); if (iptunnel_pull_header(skb, hdr_size, htons(ETH_P_TEB), false)) return true; @@ -2367,6 +2373,9 @@ static bool amt_membership_query_handler(struct amt_dev *amt, iph = ip_hdr(skb); if (iph->version == 4) { + if (READ_ONCE(amt->ready4)) + return true; + if (!pskb_may_pull(skb, sizeof(*iph) + AMT_IPHDR_OPTS + sizeof(*ihv3))) return true; @@ -2389,6 +2398,9 @@ static bool amt_membership_query_handler(struct amt_dev *amt, struct mld2_query *mld2q; struct ipv6hdr *ip6h; + if (READ_ONCE(amt->ready6)) + return true; + if (!pskb_may_pull(skb, sizeof(*ip6h) + AMT_IP6HDR_OPTS + sizeof(*mld2q))) return true; |