diff options
Diffstat (limited to 'net/ipv6/udp.c')
-rw-r--r-- | net/ipv6/udp.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 824797f8d1ab..86b7dd58d4b4 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -1023,7 +1023,8 @@ static void udp6_hwcsum_outgoing(struct sock *sk, struct sk_buff *skb, * Sending */ -static int udp_v6_send_skb(struct sk_buff *skb, struct flowi6 *fl6) +static int udp_v6_send_skb(struct sk_buff *skb, struct flowi6 *fl6, + struct inet_cork *cork) { struct sock *sk = skb->sk; struct udphdr *uh; @@ -1042,6 +1043,21 @@ static int udp_v6_send_skb(struct sk_buff *skb, struct flowi6 *fl6) uh->len = htons(len); uh->check = 0; + if (cork->gso_size) { + const int hlen = skb_network_header_len(skb) + + sizeof(struct udphdr); + + if (hlen + cork->gso_size > cork->fragsize) + return -EINVAL; + if (skb->len > cork->gso_size * UDP_MAX_SEGMENTS) + return -EINVAL; + if (skb->ip_summed != CHECKSUM_PARTIAL || is_udplite) + return -EIO; + + skb_shinfo(skb)->gso_size = cork->gso_size; + skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4; + } + if (is_udplite) csum = udplite_csum(skb); else if (udp_sk(sk)->no_check6_tx) { /* UDP csum disabled */ @@ -1093,7 +1109,7 @@ static int udp_v6_push_pending_frames(struct sock *sk) if (!skb) goto out; - err = udp_v6_send_skb(skb, &fl6); + err = udp_v6_send_skb(skb, &fl6, &inet_sk(sk)->cork.base); out: up->len = 0; @@ -1127,6 +1143,7 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) ipc6.hlimit = -1; ipc6.tclass = -1; ipc6.dontfrag = -1; + ipc6.gso_size = up->gso_size; sockc.tsflags = sk->sk_tsflags; /* destination address check */ @@ -1333,7 +1350,7 @@ back_from_confirm: msg->msg_flags, &cork, &sockc); err = PTR_ERR(skb); if (!IS_ERR_OR_NULL(skb)) - err = udp_v6_send_skb(skb, &fl6); + err = udp_v6_send_skb(skb, &fl6, &cork.base); goto out; } |