diff options
| author | Guillaume Nault <g.nault@alphalink.fr> | 2014-03-06 11:14:30 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-06 14:25:39 -0500 |
| commit | bb5016eac1656506df1a9d6057ce5bec342afbef (patch) | |
| tree | c83f3e91c9e71915164e4212722f2415b5998f6a /net/l2tp/l2tp_netlink.c | |
| parent | 1b07da516ee25250f458c76c012ebe4cd677a84f (diff) | |
| download | linux-bb5016eac1656506df1a9d6057ce5bec342afbef.tar.gz linux-bb5016eac1656506df1a9d6057ce5bec342afbef.tar.bz2 linux-bb5016eac1656506df1a9d6057ce5bec342afbef.zip | |
l2tp: fix manual sequencing (de)activation in L2TPv2
Commit e0d4435f "l2tp: Update PPP-over-L2TP driver to work over L2TPv3"
broke the PPPOL2TP_SO_SENDSEQ setsockopt. The L2TP header length was
previously computed by pppol2tp_l2t_header_len() before each call to
l2tp_xmit_skb(). Now that header length is retrieved from the hdr_len
session field, this field must be updated every time the L2TP header
format is modified, or l2tp_xmit_skb() won't push the right amount of
data for the L2TP header.
This patch uses l2tp_session_set_header_len() to adjust hdr_len every
time sequencing is (de)activated from userspace (either by the
PPPOL2TP_SO_SENDSEQ setsockopt or the L2TP_ATTR_SEND_SEQ netlink
attribute).
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp/l2tp_netlink.c')
| -rw-r--r-- | net/l2tp/l2tp_netlink.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c index 4cfd722e9153..bd7387adea9e 100644 --- a/net/l2tp/l2tp_netlink.c +++ b/net/l2tp/l2tp_netlink.c @@ -578,8 +578,10 @@ static int l2tp_nl_cmd_session_modify(struct sk_buff *skb, struct genl_info *inf if (info->attrs[L2TP_ATTR_RECV_SEQ]) session->recv_seq = nla_get_u8(info->attrs[L2TP_ATTR_RECV_SEQ]); - if (info->attrs[L2TP_ATTR_SEND_SEQ]) + if (info->attrs[L2TP_ATTR_SEND_SEQ]) { session->send_seq = nla_get_u8(info->attrs[L2TP_ATTR_SEND_SEQ]); + l2tp_session_set_header_len(session, session->tunnel->version); + } if (info->attrs[L2TP_ATTR_LNS_MODE]) session->lns_mode = nla_get_u8(info->attrs[L2TP_ATTR_LNS_MODE]); |