[SCTP]: extend exported data in /proc/net/sctp/assoc
RFC 3873 specifies several MIB objects that can't be obtained by the current data set exported by /proc/sys/net/sctp/assoc. This patch adds the missing pieces of data that allow us to compute all the objects in the sctpAssocTable object. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1661,6 +1661,9 @@ struct sctp_association {
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/* Transport to which SHUTDOWN chunk was last sent. */
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struct sctp_transport *shutdown_last_sent_to;
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/* How many times have we resent a SHUTDOWN */
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int shutdown_retries;
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/* Transport to which INIT chunk was last sent. */
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struct sctp_transport *init_last_sent_to;
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@ -1695,6 +1698,11 @@ struct sctp_association {
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*/
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__u16 unack_data;
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/* The total number of data chunks that we've had to retransmit
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* as the result of a T3 timer expiration
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*/
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__u32 rtx_data_chunks;
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/* This is the association's receive buffer space. This value is used
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* to set a_rwnd field in an INIT or a SACK chunk.
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*/
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@ -494,6 +494,8 @@ void sctp_retransmit(struct sctp_outq *q, struct sctp_transport *transport,
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*/
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if (transport == transport->asoc->peer.retran_path)
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sctp_assoc_update_retran_path(transport->asoc);
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transport->asoc->rtx_data_chunks +=
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transport->asoc->unack_data;
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break;
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case SCTP_RTXR_FAST_RTX:
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SCTP_INC_STATS(SCTP_MIB_FAST_RETRANSMITS);
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@ -504,6 +506,7 @@ void sctp_retransmit(struct sctp_outq *q, struct sctp_transport *transport,
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break;
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case SCTP_RTXR_T1_RTX:
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SCTP_INC_STATS(SCTP_MIB_T1_RETRANSMITS);
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transport->asoc->init_retries++;
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break;
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default:
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BUG();
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@ -281,8 +281,10 @@ static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
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*pos = 0;
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if (*pos == 0)
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seq_printf(seq, " ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
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"RPORT LADDRS <-> RADDRS\n");
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seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
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"ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
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"RPORT LADDRS <-> RADDRS "
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"HBINT INS OUTS MAXRT T1X T2X RTXC\n");
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return (void *)pos;
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}
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@ -321,15 +323,21 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
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assoc = sctp_assoc(epb);
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sk = epb->sk;
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seq_printf(seq,
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"%8p %8p %-3d %-3d %-2d %-4d %4d %8d %8d %7d %5lu %-5d %5d ",
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"%8p %8p %-3d %-3d %-2d %-4d "
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"%4d %8d %8d %7d %5lu %-5d %5d "
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"%8d %5d %5d %4d %4d %4d %8d ",
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assoc, sk, sctp_sk(sk)->type, sk->sk_state,
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assoc->state, hash, assoc->assoc_id,
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assoc->state, hash,
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assoc->assoc_id,
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assoc->sndbuf_used,
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atomic_read(&assoc->rmem_alloc),
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sock_i_uid(sk), sock_i_ino(sk),
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epb->bind_addr.port,
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assoc->peer.port);
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assoc->peer.port,
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assoc->hbinterval, assoc->c.sinit_max_instreams,
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assoc->c.sinit_num_ostreams, assoc->max_retrans,
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assoc->init_retries, assoc->shutdown_retries,
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assoc->rtx_data_chunks);
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seq_printf(seq, " ");
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sctp_seq_dump_local_addrs(seq, epb);
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seq_printf(seq, "<-> ");
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@ -5312,6 +5312,8 @@ sctp_disposition_t sctp_sf_t2_timer_expire(const struct sctp_endpoint *ep,
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SCTP_DEBUG_PRINTK("Timer T2 expired.\n");
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SCTP_INC_STATS(SCTP_MIB_T2_SHUTDOWN_EXPIREDS);
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((struct sctp_association *)asoc)->shutdown_retries++;
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if (asoc->overall_error_count >= asoc->max_retrans) {
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sctp_add_cmd_sf(commands, SCTP_CMD_SET_SK_ERR,
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SCTP_ERROR(ETIMEDOUT));
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