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| author |   Xin Long <lucien.xin@gmail.com> | 2021-10-28 05:36:04 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-10-29 12:21:23 +0100 |
| commit | 75cf662c64dd8543f56c329c69eba18141c8fd9f (patch) | |
| tree | 03cce6f1a8f05eaba99b0d9114770e9c251e8616 | |
| parent | sctp: subtract sctphdr len in sctp_transport_pl_hlen (diff) | |
| download | linux-dev-75cf662c64dd8543f56c329c69eba18141c8fd9f.tar.xz linux-dev-75cf662c64dd8543f56c329c69eba18141c8fd9f.zip | |
sctp: return true only for pathmtu update in sctp_transport_pl_toobig
sctp_transport_pl_toobig() supposes to return true only if there's
pathmtu update, so that in sctp_icmp_frag_needed() it would call
sctp_assoc_sync_pmtu() and sctp_retransmit(). This patch is to fix
these return places in sctp_transport_pl_toobig().
Fixes: 836964083177 ("sctp: do state transition when receiving an icmp TOOBIG packet")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sctp/transport.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/sctp/transport.c b/net/sctp/transport.c index 1f2dfad768d5..133f1719bf1b 100644 --- a/net/sctp/transport.c +++ b/net/sctp/transport.c @@ -368,6 +368,7 @@ static bool sctp_transport_pl_toobig(struct sctp_transport *t, u32 pmtu) t->pl.pmtu = SCTP_BASE_PLPMTU; t->pathmtu = t->pl.pmtu + sctp_transport_pl_hlen(t); + return true; } } else if (t->pl.state == SCTP_PL_SEARCH) { if (pmtu >= SCTP_BASE_PLPMTU && pmtu < t->pl.pmtu) { @@ -378,11 +379,10 @@ static bool sctp_transport_pl_toobig(struct sctp_transport *t, u32 pmtu) t->pl.probe_high = 0; t->pl.pmtu = SCTP_BASE_PLPMTU; t->pathmtu = t->pl.pmtu + sctp_transport_pl_hlen(t); + return true; } else if (pmtu > t->pl.pmtu && pmtu < t->pl.probe_size) { t->pl.probe_size = pmtu; t->pl.probe_count = 0; - - return false; } } else if (t->pl.state == SCTP_PL_COMPLETE) { if (pmtu >= SCTP_BASE_PLPMTU && pmtu < t->pl.pmtu) { @@ -393,10 +393,11 @@ static bool sctp_transport_pl_toobig(struct sctp_transport *t, u32 pmtu) t->pl.probe_high = 0; t->pl.pmtu = SCTP_BASE_PLPMTU; t->pathmtu = t->pl.pmtu + sctp_transport_pl_hlen(t); + return true; } } - return true; + return false; } bool sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu) |