diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 5c87f1d3e525..33ea389ee015 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -808,10 +808,8 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, } } - /* Session data offset is handled differently for L2TPv2 and - * L2TPv3. For L2TPv2, there is an optional 16-bit value in - * the header. For L2TPv3, the offset is negotiated using AVPs - * in the session setup control protocol. + /* Session data offset is defined only for L2TPv2 and is + * indicated by an optional 16-bit value in the header. */ if (tunnel->version == L2TP_HDR_VER_2) { /* If offset bit set, skip it. */ @@ -819,8 +817,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, offset = ntohs(*(__be16 *)ptr); ptr += 2 + offset; } - } else - ptr += session->offset; + } offset = ptr - optr; if (!pskb_may_pull(skb, offset)) @@ -1104,8 +1101,6 @@ static int l2tp_build_l2tpv3_header(struct l2tp_session *session, void *buf) } bufp += session->l2specific_len; } - if (session->offset) - bufp += session->offset; return bufp - optr; } @@ -1779,7 +1774,7 @@ void l2tp_session_set_header_len(struct l2tp_session *session, int version) if (session->send_seq) session->hdr_len += 4; } else { - session->hdr_len = 4 + session->cookie_len + session->l2specific_len + session->offset; + session->hdr_len = 4 + session->cookie_len + session->l2specific_len; if (session->tunnel->encap == L2TP_ENCAPTYPE_UDP) session->hdr_len += 4; } @@ -1830,7 +1825,6 @@ struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunn session->recv_seq = cfg->recv_seq; session->lns_mode = cfg->lns_mode; session->reorder_timeout = cfg->reorder_timeout; - session->offset = cfg->offset; session->l2specific_type = cfg->l2specific_type; session->l2specific_len = cfg->l2specific_len; session->cookie_len = cfg->cookie_len; diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h index 9e2f1fda1b03..0a58c0754526 100644 --- a/net/l2tp/l2tp_core.h +++ b/net/l2tp/l2tp_core.h @@ -59,7 +59,6 @@ struct l2tp_session_cfg { int debug; /* bitmask of debug message * categories */ u16 vlan_id; /* VLAN pseudowire only */ - u16 offset; /* offset to payload */ u16 l2specific_len; /* Layer 2 specific length */ u16 l2specific_type; /* Layer 2 specific type */ u8 cookie[8]; /* optional cookie */ @@ -86,8 +85,6 @@ struct l2tp_session { int cookie_len; u8 peer_cookie[8]; int peer_cookie_len; - u16 offset; /* offset from end of L2TP header - to beginning of data */ u16 l2specific_len; u16 l2specific_type; u16 hdr_len; diff --git a/net/l2tp/l2tp_debugfs.c b/net/l2tp/l2tp_debugfs.c index 53bae54c4d6e..534cad03b9e9 100644 --- a/net/l2tp/l2tp_debugfs.c +++ b/net/l2tp/l2tp_debugfs.c @@ -180,8 +180,8 @@ static void l2tp_dfs_seq_session_show(struct seq_file *m, void *v) session->lns_mode ? "LNS" : "LAC", session->debug, jiffies_to_msecs(session->reorder_timeout)); - seq_printf(m, " offset %hu l2specific %hu/%hu\n", - session->offset, session->l2specific_type, session->l2specific_len); + seq_printf(m, " offset 0 l2specific %hu/%hu\n", + session->l2specific_type, session->l2specific_len); if (session->cookie_len) { seq_printf(m, " cookie %02x%02x%02x%02x", session->cookie[0], session->cookie[1], diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c index c28223d8092b..001797ce4084 100644 --- a/net/l2tp/l2tp_netlink.c +++ b/net/l2tp/l2tp_netlink.c @@ -549,9 +549,6 @@ static int l2tp_nl_cmd_session_create(struct sk_buff *skb, struct genl_info *inf } if (tunnel->version > 2) { - if (info->attrs[L2TP_ATTR_OFFSET]) - cfg.offset = nla_get_u16(info->attrs[L2TP_ATTR_OFFSET]); - if (info->attrs[L2TP_ATTR_DATA_SEQ]) cfg.data_seq = nla_get_u8(info->attrs[L2TP_ATTR_DATA_SEQ]);