diff options
| author | Richard Haines <richard_c_haines@btinternet.com> | 2018-02-24 19:18:51 +0300 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2018-02-27 01:43:54 +0300 |
| commit | b7e10c25b839c0c7579b2b402afc9883c107e09f (patch) | |
| tree | ff919f7f54cb047461fcb747649f77c8e1de539e /net/sctp/chunk.c | |
| parent | 72e89f50084c6dbc58a00aeedf92c450dc1a8b1c (diff) | |
| download | linux-b7e10c25b839c0c7579b2b402afc9883c107e09f.tar.xz | |
sctp: Add ip option support
Add ip option support to allow LSM security modules to utilise CIPSO/IPv4
and CALIPSO/IPv6 services.
Signed-off-by: Richard Haines <richard_c_haines@btinternet.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'net/sctp/chunk.c')
| -rw-r--r-- | net/sctp/chunk.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/net/sctp/chunk.c b/net/sctp/chunk.c index 991a530c6b31..d726d213de9a 100644 --- a/net/sctp/chunk.c +++ b/net/sctp/chunk.c @@ -171,6 +171,8 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc, struct list_head *pos, *temp; struct sctp_chunk *chunk; struct sctp_datamsg *msg; + struct sctp_sock *sp; + struct sctp_af *af; int err; msg = sctp_datamsg_new(GFP_KERNEL); @@ -189,9 +191,11 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc, /* This is the biggest possible DATA chunk that can fit into * the packet */ - max_data = asoc->pathmtu - - sctp_sk(asoc->base.sk)->pf->af->net_header_len - - sizeof(struct sctphdr) - sctp_datachk_len(&asoc->stream); + sp = sctp_sk(asoc->base.sk); + af = sp->pf->af; + max_data = asoc->pathmtu - af->net_header_len - + sizeof(struct sctphdr) - sctp_datachk_len(&asoc->stream) - + af->ip_options_len(asoc->base.sk); max_data = SCTP_TRUNC4(max_data); /* If the the peer requested that we authenticate DATA chunks |