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| author | Tom Herbert <therbert@google.com> | 2014-05-23 08:47:40 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-05-23 16:28:53 -0400 |
| commit | 6b649feafe10b293f4bd5a74aca95faf625ae525 (patch) | |
| tree | 842991b315c84e51fa4c2ececfba60e2992944b9 /net/l2tp/l2tp_core.c | |
| parent | 1c19448c9ba6545b80ded18488a64a7f3d8e6998 (diff) | |
| download | linux-6b649feafe10b293f4bd5a74aca95faf625ae525.tar.gz linux-6b649feafe10b293f4bd5a74aca95faf625ae525.tar.bz2 linux-6b649feafe10b293f4bd5a74aca95faf625ae525.zip | |
l2tp: Add support for zero IPv6 checksums
Added new L2TP configuration options to allow TX and RX of
zero checksums in IPv6. Default is not to use them.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp/l2tp_core.c')
| -rw-r--r-- | net/l2tp/l2tp_core.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index a1186105f537..379558014b60 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1102,7 +1102,9 @@ static void l2tp_xmit_ipv6_csum(struct sock *sk, struct sk_buff *skb, struct ipv6_pinfo *np = inet6_sk(sk); struct udphdr *uh = udp_hdr(skb); - if (!skb_dst(skb) || !skb_dst(skb)->dev || + if (udp_get_no_check6_tx(sk)) + skb->ip_summed = CHECKSUM_NONE; + else if (!skb_dst(skb) || !skb_dst(skb)->dev || !(skb_dst(skb)->dev->features & NETIF_F_IPV6_CSUM)) { __wsum csum = skb_checksum(skb, 0, udp_len, 0); skb->ip_summed = CHECKSUM_UNNECESSARY; @@ -1435,6 +1437,11 @@ static int l2tp_tunnel_sock_create(struct net *net, sizeof(udp6_addr), 0); if (err < 0) goto out; + + if (cfg->udp6_zero_tx_checksums) + udp_set_no_check6_tx(sock->sk, true); + if (cfg->udp6_zero_rx_checksums) + udp_set_no_check6_rx(sock->sk, true); } else #endif { |