sctp: introduce sctp_assoc_set_pmtu
All changes to asoc PMTU should now go through this wrapper, making it easier to track them and to do other actions upon it. Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -2097,6 +2097,7 @@ int sctp_assoc_update(struct sctp_association *old,
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__u32 sctp_association_get_next_tsn(struct sctp_association *);
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__u32 sctp_association_get_next_tsn(struct sctp_association *);
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void sctp_assoc_set_pmtu(struct sctp_association *asoc, __u32 pmtu);
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void sctp_assoc_sync_pmtu(struct sctp_association *asoc);
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void sctp_assoc_sync_pmtu(struct sctp_association *asoc);
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void sctp_assoc_rwnd_increase(struct sctp_association *, unsigned int);
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void sctp_assoc_rwnd_increase(struct sctp_association *, unsigned int);
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void sctp_assoc_rwnd_decrease(struct sctp_association *, unsigned int);
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void sctp_assoc_rwnd_decrease(struct sctp_association *, unsigned int);
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@ -660,13 +660,9 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
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* If not and the current association PMTU is higher than the new
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* If not and the current association PMTU is higher than the new
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* peer's PMTU, reset the association PMTU to the new peer's PMTU.
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* peer's PMTU, reset the association PMTU to the new peer's PMTU.
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*/
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*/
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if (asoc->pathmtu)
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sctp_assoc_set_pmtu(asoc, asoc->pathmtu ?
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asoc->pathmtu = min_t(int, peer->pathmtu, asoc->pathmtu);
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min_t(int, peer->pathmtu, asoc->pathmtu) :
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else
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peer->pathmtu);
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asoc->pathmtu = peer->pathmtu;
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pr_debug("%s: association:%p PMTU set to %d\n", __func__, asoc,
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asoc->pathmtu);
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peer->pmtu_pending = 0;
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peer->pmtu_pending = 0;
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@ -1374,6 +1370,15 @@ sctp_assoc_choose_alter_transport(struct sctp_association *asoc,
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}
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}
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}
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}
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void sctp_assoc_set_pmtu(struct sctp_association *asoc, __u32 pmtu)
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{
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if (asoc->pathmtu != pmtu)
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asoc->pathmtu = pmtu;
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pr_debug("%s: asoc:%p, pmtu:%d, frag_point:%d\n", __func__, asoc,
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asoc->pathmtu, asoc->frag_point);
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}
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/* Update the association's pmtu and frag_point by going through all the
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/* Update the association's pmtu and frag_point by going through all the
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* transports. This routine is called when a transport's PMTU has changed.
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* transports. This routine is called when a transport's PMTU has changed.
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*/
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*/
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@ -1397,7 +1402,7 @@ void sctp_assoc_sync_pmtu(struct sctp_association *asoc)
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pmtu = t->pathmtu;
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pmtu = t->pathmtu;
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}
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}
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asoc->pathmtu = pmtu;
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sctp_assoc_set_pmtu(asoc, pmtu);
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asoc->frag_point = sctp_frag_point(asoc, pmtu);
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asoc->frag_point = sctp_frag_point(asoc, pmtu);
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pr_debug("%s: asoc:%p, pmtu:%d, frag_point:%d\n", __func__, asoc,
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pr_debug("%s: asoc:%p, pmtu:%d, frag_point:%d\n", __func__, asoc,
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@ -2539,7 +2539,7 @@ static int sctp_apply_peer_addr_params(struct sctp_paddrparams *params,
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trans->pathmtu = params->spp_pathmtu;
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trans->pathmtu = params->spp_pathmtu;
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sctp_assoc_sync_pmtu(asoc);
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sctp_assoc_sync_pmtu(asoc);
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} else if (asoc) {
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} else if (asoc) {
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asoc->pathmtu = params->spp_pathmtu;
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sctp_assoc_set_pmtu(asoc, params->spp_pathmtu);
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} else {
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} else {
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sp->pathmtu = params->spp_pathmtu;
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sp->pathmtu = params->spp_pathmtu;
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}
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}
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