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| author | Guillaume Nault <g.nault@alphalink.fr> | 2018-07-27 11:00:00 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-27 13:34:53 -0700 |
| commit | 92ea4a7eec7289468ac8de5386f4b13d9c210cb5 (patch) | |
| tree | 60ffe7bf60fa0277f8e4dd7be0024c7e7dc6a2c8 /net/l2tp/l2tp_ppp.c | |
| parent | 1998b5ed9c9bba5369e7c3659fc8a2e468e62bea (diff) | |
| download | linux-92ea4a7eec7289468ac8de5386f4b13d9c210cb5.tar.gz linux-92ea4a7eec7289468ac8de5386f4b13d9c210cb5.tar.bz2 linux-92ea4a7eec7289468ac8de5386f4b13d9c210cb5.zip | |
l2tp: drop ->mru from struct l2tp_session
This field is not used.
Treat PPPIOC*MRU the same way as PPPIOC*FLAGS: "get" requests return 0,
while "set" requests vadidate the user supplied pointer but discard its
value.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp/l2tp_ppp.c')
| -rw-r--r-- | net/l2tp/l2tp_ppp.c | 41 |
1 files changed, 5 insertions, 36 deletions
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 759ce8421269..44cac66284a5 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -570,10 +570,9 @@ static void pppol2tp_session_init(struct l2tp_session *session) if (dst) { u32 pmtu = dst_mtu(dst); - if (pmtu) { + if (pmtu) session->mtu = pmtu - PPPOL2TP_HEADER_OVERHEAD; - session->mru = pmtu - PPPOL2TP_HEADER_OVERHEAD; - } + dst_release(dst); } } @@ -781,7 +780,6 @@ static int pppol2tp_connect(struct socket *sock, struct sockaddr *uservaddr, } else { /* Default MTU must allow space for UDP/L2TP/PPP headers */ cfg.mtu = 1500 - PPPOL2TP_HEADER_OVERHEAD; - cfg.mru = cfg.mtu; cfg.pw_type = L2TP_PWTYPE_PPP; session = l2tp_session_create(sizeof(struct pppol2tp_session), @@ -885,8 +883,6 @@ static int pppol2tp_session_create(struct net *net, struct l2tp_tunnel *tunnel, /* Default MTU values. */ if (cfg->mtu == 0) cfg->mtu = 1500 - PPPOL2TP_HEADER_OVERHEAD; - if (cfg->mru == 0) - cfg->mru = cfg->mtu; /* Allocate and initialize a new session context. */ session = l2tp_session_create(sizeof(struct pppol2tp_session), @@ -1101,34 +1097,6 @@ static int pppol2tp_session_ioctl(struct l2tp_session *session, break; case PPPIOCGMRU: - err = -ENXIO; - if (!(sk->sk_state & PPPOX_CONNECTED)) - break; - - err = -EFAULT; - if (put_user(session->mru, (int __user *) arg)) - break; - - l2tp_info(session, L2TP_MSG_CONTROL, "%s: get mru=%d\n", - session->name, session->mru); - err = 0; - break; - - case PPPIOCSMRU: - err = -ENXIO; - if (!(sk->sk_state & PPPOX_CONNECTED)) - break; - - err = -EFAULT; - if (get_user(val, (int __user *) arg)) - break; - - session->mru = val; - l2tp_info(session, L2TP_MSG_CONTROL, "%s: set mru=%d\n", - session->name, session->mru); - err = 0; - break; - case PPPIOCGFLAGS: err = -EFAULT; if (put_user(0, (int __user *)arg)) @@ -1136,6 +1104,7 @@ static int pppol2tp_session_ioctl(struct l2tp_session *session, err = 0; break; + case PPPIOCSMRU: case PPPIOCSFLAGS: err = -EFAULT; if (get_user(val, (int __user *)arg)) @@ -1723,8 +1692,8 @@ static void pppol2tp_seq_session_show(struct seq_file *m, void *v) tunnel->peer_tunnel_id, session->peer_session_id, state, user_data_ok); - seq_printf(m, " %d/%d/%c/%c/%s %08x %u\n", - session->mtu, session->mru, + seq_printf(m, " %d/0/%c/%c/%s %08x %u\n", + session->mtu, session->recv_seq ? 'R' : '-', session->send_seq ? 'S' : '-', session->lns_mode ? "LNS" : "LAC", |