On Tue, Oct 16, 2018 at 03:52:02PM +0800, Xin Long wrote:
> According to rfc7496 section 4.3 or 4.4:
>
> sprstat_policy: This parameter indicates for which PR-SCTP policy
> the user wants the information. It is an error to use
> SCTP_PR_SCTP_NONE in sprstat_policy. If SCTP_PR_SCTP_ALL is used,
> the counters provided are aggregated over all supported policies.
>
> We change to dump pr_assoc and pr_stream all status by SCTP_PR_SCTP_ALL
> instead, and return error for SCTP_PR_SCTP_NONE, as it also said "It is
> an error to use SCTP_PR_SCTP_NONE in sprstat_policy. "
>
> Fixes: 826d253d57b1 ("sctp: add SCTP_PR_ASSOC_STATUS on sctp sockopt")
> Fixes: d229d48d183f ("sctp: add SCTP_PR_STREAM_STATUS sockopt for prsctp")
> Reported-by: Ying Xu <yinxu@xxxxxxxxxx>
> Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
> ---
> include/uapi/linux/sctp.h | 1 +
> net/sctp/socket.c | 8 ++++----
> 2 files changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/include/uapi/linux/sctp.h b/include/uapi/linux/sctp.h
> index b479db5..34dd3d4 100644
> --- a/include/uapi/linux/sctp.h
> +++ b/include/uapi/linux/sctp.h
> @@ -301,6 +301,7 @@ enum sctp_sinfo_flags {
> SCTP_SACK_IMMEDIATELY = (1 << 3), /* SACK should be sent without delay. */
> /* 2 bits here have been used by SCTP_PR_SCTP_MASK */
> SCTP_SENDALL = (1 << 6),
> + SCTP_PR_SCTP_ALL = (1 << 7),
> SCTP_NOTIFICATION = MSG_NOTIFICATION, /* Next message is not user msg but notification. */
> SCTP_EOF = MSG_FIN, /* Initiate graceful shutdown process. */
> };
> diff --git a/net/sctp/socket.c b/net/sctp/socket.c
> index f73e9d3..e25a20f 100644
> --- a/net/sctp/socket.c
> +++ b/net/sctp/socket.c
> @@ -7100,14 +7100,14 @@ static int sctp_getsockopt_pr_assocstatus(struct sock *sk, int len,
> }
>
> policy = params.sprstat_policy;
> - if (policy & ~SCTP_PR_SCTP_MASK)
> + if (!policy || (policy & ~(SCTP_PR_SCTP_MASK | SCTP_PR_SCTP_ALL)))
> goto out;
>
> asoc = sctp_id2assoc(sk, params.sprstat_assoc_id);
> if (!asoc)
> goto out;
>
> - if (policy == SCTP_PR_SCTP_NONE) {
> + if (policy & SCTP_PR_SCTP_ALL) {
> params.sprstat_abandoned_unsent = 0;
> params.sprstat_abandoned_sent = 0;
> for (policy = 0; policy <= SCTP_PR_INDEX(MAX); policy++) {
> @@ -7159,7 +7159,7 @@ static int sctp_getsockopt_pr_streamstatus(struct sock *sk, int len,
> }
>
> policy = params.sprstat_policy;
> - if (policy & ~SCTP_PR_SCTP_MASK)
> + if (!policy || (policy & ~(SCTP_PR_SCTP_MASK | SCTP_PR_SCTP_ALL)))
> goto out;
>
> asoc = sctp_id2assoc(sk, params.sprstat_assoc_id);
> @@ -7175,7 +7175,7 @@ static int sctp_getsockopt_pr_streamstatus(struct sock *sk, int len,
> goto out;
> }
>
> - if (policy == SCTP_PR_SCTP_NONE) {
> + if (policy == SCTP_PR_SCTP_ALL) {
> params.sprstat_abandoned_unsent = 0;
> params.sprstat_abandoned_sent = 0;
> for (policy = 0; policy <= SCTP_PR_INDEX(MAX); policy++) {
> --
> 2.1.0
>
>
Acked-by: Neil Horman <nhorman@xxxxxxxxxxxxx>
