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sctp: translate host order to network order when setting a hmacid 

[ Upstream commit ed5a377d87dc4c87fb3e1f7f698cba38cd893103 ]

now sctp auth cannot work well when setting a hmacid manually, which
is caused by that we didn't use the network order for hmacid, so fix
it by adding the transformation in sctp_auth_ep_set_hmacs.

even we set hmacid with the network order in userspace, it still
can't work, because of this condition in sctp_auth_ep_set_hmacs():

		if (id > SCTP_AUTH_HMAC_ID_MAX)
			return -EOPNOTSUPP;

so this wasn't working before and thus it won't break compatibility.

Fixes: 65b07e5d0d ("[SCTP]: API updates to suport SCTP-AUTH extensions.")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
lucien 2015-11-12 13:07:07 +08:00 committed by Greg Kroah-Hartman
parent da8db0830a
commit 3fb28c9723
1 changed files with 2 additions and 2 deletions
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4
net/sctp/auth.c
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@ -812,8 +812,8 @@ int sctp_auth_ep_set_hmacs(struct sctp_endpoint *ep,
if (!has_sha1)
return -EINVAL;
memcpy(ep->auth_hmacs_list->hmac_ids, &hmacs->shmac_idents[0],
hmacs->shmac_num_idents * sizeof(__u16));
for (i = 0; i < hmacs->shmac_num_idents; i++)
ep->auth_hmacs_list->hmac_ids[i] = htons(hmacs->shmac_idents[i]);
ep->auth_hmacs_list->param_hdr.length = htons(sizeof(sctp_paramhdr_t) +
hmacs->shmac_num_idents * sizeof(__u16));
return 0;