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| author | Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> | 2018-04-26 22:58:57 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-27 21:35:23 +0300 |
| commit | 6ff0f871c20ec1769a481edca86f23c76b2b06d3 (patch) | |
| tree | 9fa281c225263df1e1b00e12adfeedfdb6e690f1 /include/net/sctp | |
| parent | 2521680e1830c21033efe48322829044c6e6b32b (diff) | |
| download | linux-6ff0f871c20ec1769a481edca86f23c76b2b06d3.tar.xz | |
sctp: introduce sctp_dst_mtu
Which makes sure that the MTU respects the minimum value of
SCTP_DEFAULT_MINSEGMENT and that it is correctly aligned.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sctp')
| -rw-r--r-- | include/net/sctp/sctp.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h index e327acad8e7d..4965cbfa7d92 100644 --- a/include/net/sctp/sctp.h +++ b/include/net/sctp/sctp.h @@ -600,10 +600,15 @@ static inline __u32 sctp_mtu_payload(const struct sctp_sock *sp, return mtu ? mtu - overhead : overhead; } +static inline __u32 sctp_dst_mtu(const struct dst_entry *dst) +{ + return SCTP_TRUNC4(max_t(__u32, dst_mtu(dst), + SCTP_DEFAULT_MINSEGMENT)); +} + static inline bool sctp_transport_pmtu_check(struct sctp_transport *t) { - __u32 pmtu = max_t(size_t, SCTP_TRUNC4(dst_mtu(t->dst)), - SCTP_DEFAULT_MINSEGMENT); + __u32 pmtu = sctp_dst_mtu(t->dst); if (t->pathmtu == pmtu) return true; |