sctp: Bring SCTP_DELAYED_ACK socket option into API compliance
Brings delayed_ack socket option set/get into line with the latest ietf socket extensions API draft, while maintaining backwards compatibility. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
5c5e12898a
commit
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@ -300,6 +300,7 @@ struct sctp_sock {
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/* The default SACK delay timeout for new associations. */
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__u32 sackdelay;
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__u32 sackfreq;
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/* Flags controlling Heartbeat, SACK delay, and Path MTU Discovery. */
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__u32 param_flags;
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@ -938,6 +939,7 @@ struct sctp_transport {
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/* SACK delay timeout */
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unsigned long sackdelay;
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__u32 sackfreq;
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/* When was the last time (in jiffies) that we heard from this
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* transport? We use this to pick new active and retran paths.
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@ -1542,6 +1544,7 @@ struct sctp_association {
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* : SACK's are not delayed (see Section 6).
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*/
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__u8 sack_needed; /* Do we need to sack the peer? */
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__u32 sack_cnt;
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/* These are capabilities which our peer advertised. */
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__u8 ecn_capable; /* Can peer do ECN? */
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@ -1651,6 +1654,7 @@ struct sctp_association {
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/* SACK delay timeout */
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unsigned long sackdelay;
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__u32 sackfreq;
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unsigned long timeouts[SCTP_NUM_TIMEOUT_TYPES];
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@ -93,8 +93,9 @@ enum sctp_optname {
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#define SCTP_STATUS SCTP_STATUS
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SCTP_GET_PEER_ADDR_INFO,
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#define SCTP_GET_PEER_ADDR_INFO SCTP_GET_PEER_ADDR_INFO
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SCTP_DELAYED_ACK_TIME,
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#define SCTP_DELAYED_ACK_TIME SCTP_DELAYED_ACK_TIME
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SCTP_DELAYED_ACK,
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#define SCTP_DELAYED_ACK_TIME SCTP_DELAYED_ACK
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#define SCTP_DELAYED_ACK SCTP_DELAYED_ACK
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SCTP_CONTEXT, /* Receive Context */
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#define SCTP_CONTEXT SCTP_CONTEXT
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SCTP_FRAGMENT_INTERLEAVE,
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@ -618,13 +619,26 @@ struct sctp_authkeyid {
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};
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/* 7.1.23. Delayed Ack Timer (SCTP_DELAYED_ACK_TIME)
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/*
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* 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK)
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*
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* This options will get or set the delayed ack timer. The time is set
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* in milliseconds. If the assoc_id is 0, then this sets or gets the
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* endpoints default delayed ack timer value. If the assoc_id field is
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* non-zero, then the set or get effects the specified association.
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* This option will effect the way delayed acks are performed. This
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* option allows you to get or set the delayed ack time, in
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* milliseconds. It also allows changing the delayed ack frequency.
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* Changing the frequency to 1 disables the delayed sack algorithm. If
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* the assoc_id is 0, then this sets or gets the endpoints default
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* values. If the assoc_id field is non-zero, then the set or get
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* effects the specified association for the one to many model (the
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* assoc_id field is ignored by the one to one model). Note that if
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* sack_delay or sack_freq are 0 when setting this option, then the
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* current values will remain unchanged.
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*/
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struct sctp_sack_info {
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sctp_assoc_t sack_assoc_id;
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uint32_t sack_delay;
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uint32_t sack_freq;
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};
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struct sctp_assoc_value {
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sctp_assoc_t assoc_id;
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uint32_t assoc_value;
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@ -136,6 +136,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
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/* Set association default SACK delay */
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asoc->sackdelay = msecs_to_jiffies(sp->sackdelay);
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asoc->sackfreq = sp->sackfreq;
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/* Set the association default flags controlling
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* Heartbeat, SACK delay, and Path MTU Discovery.
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@ -261,6 +262,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
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* already received one packet.]
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*/
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asoc->peer.sack_needed = 1;
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asoc->peer.sack_cnt = 0;
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/* Assume that the peer will tell us if he recognizes ASCONF
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* as part of INIT exchange.
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@ -615,6 +617,7 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
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* association configured value.
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*/
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peer->sackdelay = asoc->sackdelay;
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peer->sackfreq = asoc->sackfreq;
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/* Enable/disable heartbeat, SACK delay, and path MTU discovery
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* based on association setting.
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@ -190,20 +190,28 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
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* unacknowledged DATA chunk. ...
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*/
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if (!asoc->peer.sack_needed) {
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/* We will need a SACK for the next packet. */
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asoc->peer.sack_needed = 1;
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asoc->peer.sack_cnt++;
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/* Set the SACK delay timeout based on the
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* SACK delay for the last transport
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* data was received from, or the default
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* for the association.
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*/
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if (trans)
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if (trans) {
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/* We will need a SACK for the next packet. */
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if (asoc->peer.sack_cnt >= trans->sackfreq - 1)
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asoc->peer.sack_needed = 1;
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asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] =
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trans->sackdelay;
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else
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} else {
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/* We will need a SACK for the next packet. */
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if (asoc->peer.sack_cnt >= asoc->sackfreq - 1)
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asoc->peer.sack_needed = 1;
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asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] =
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asoc->sackdelay;
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}
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/* Restart the SACK timer. */
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sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
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@ -216,6 +224,7 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
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goto nomem;
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asoc->peer.sack_needed = 0;
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asoc->peer.sack_cnt = 0;
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sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(sack));
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@ -2305,74 +2305,98 @@ static int sctp_setsockopt_peer_addr_params(struct sock *sk,
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return 0;
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}
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/* 7.1.23. Delayed Ack Timer (SCTP_DELAYED_ACK_TIME)
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/*
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* 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK)
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*
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* This options will get or set the delayed ack timer. The time is set
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* in milliseconds. If the assoc_id is 0, then this sets or gets the
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* endpoints default delayed ack timer value. If the assoc_id field is
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* non-zero, then the set or get effects the specified association.
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* This option will effect the way delayed acks are performed. This
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* option allows you to get or set the delayed ack time, in
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* milliseconds. It also allows changing the delayed ack frequency.
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* Changing the frequency to 1 disables the delayed sack algorithm. If
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* the assoc_id is 0, then this sets or gets the endpoints default
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* values. If the assoc_id field is non-zero, then the set or get
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* effects the specified association for the one to many model (the
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* assoc_id field is ignored by the one to one model). Note that if
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* sack_delay or sack_freq are 0 when setting this option, then the
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* current values will remain unchanged.
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*
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* struct sctp_assoc_value {
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* sctp_assoc_t assoc_id;
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* uint32_t assoc_value;
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* };
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* struct sctp_sack_info {
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* sctp_assoc_t sack_assoc_id;
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* uint32_t sack_delay;
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* uint32_t sack_freq;
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* };
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*
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* assoc_id - This parameter, indicates which association the
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* user is preforming an action upon. Note that if
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* this field's value is zero then the endpoints
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* default value is changed (effecting future
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* associations only).
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* sack_assoc_id - This parameter, indicates which association the user
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* is performing an action upon. Note that if this field's value is
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* zero then the endpoints default value is changed (effecting future
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* associations only).
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*
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* assoc_value - This parameter contains the number of milliseconds
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* that the user is requesting the delayed ACK timer
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* be set to. Note that this value is defined in
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* the standard to be between 200 and 500 milliseconds.
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* sack_delay - This parameter contains the number of milliseconds that
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* the user is requesting the delayed ACK timer be set to. Note that
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* this value is defined in the standard to be between 200 and 500
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* milliseconds.
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*
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* Note: a value of zero will leave the value alone,
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* but disable SACK delay. A non-zero value will also
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* enable SACK delay.
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* sack_freq - This parameter contains the number of packets that must
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* be received before a sack is sent without waiting for the delay
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* timer to expire. The default value for this is 2, setting this
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* value to 1 will disable the delayed sack algorithm.
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*/
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static int sctp_setsockopt_delayed_ack_time(struct sock *sk,
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static int sctp_setsockopt_delayed_ack(struct sock *sk,
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char __user *optval, int optlen)
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{
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struct sctp_assoc_value params;
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struct sctp_sack_info params;
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struct sctp_transport *trans = NULL;
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struct sctp_association *asoc = NULL;
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struct sctp_sock *sp = sctp_sk(sk);
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if (optlen != sizeof(struct sctp_assoc_value))
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if (optlen == sizeof(struct sctp_sack_info)) {
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if (copy_from_user(¶ms, optval, optlen))
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return -EFAULT;
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if (params.sack_delay == 0 && params.sack_freq == 0)
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return 0;
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} else if (optlen == sizeof(struct sctp_assoc_value)) {
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printk(KERN_WARNING "SCTP: Use of struct sctp_sack_info "
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"in delayed_ack socket option deprecated\n");
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printk(KERN_WARNING "SCTP: struct sctp_sack_info instead\n");
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if (copy_from_user(¶ms, optval, optlen))
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return -EFAULT;
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if (params.sack_delay == 0)
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params.sack_freq = 1;
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else
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params.sack_freq = 0;
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} else
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return - EINVAL;
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if (copy_from_user(¶ms, optval, optlen))
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return -EFAULT;
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/* Validate value parameter. */
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if (params.assoc_value > 500)
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if (params.sack_delay > 500)
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return -EINVAL;
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/* Get association, if assoc_id != 0 and the socket is a one
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/* Get association, if sack_assoc_id != 0 and the socket is a one
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* to many style socket, and an association was not found, then
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* the id was invalid.
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*/
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asoc = sctp_id2assoc(sk, params.assoc_id);
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if (!asoc && params.assoc_id && sctp_style(sk, UDP))
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asoc = sctp_id2assoc(sk, params.sack_assoc_id);
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if (!asoc && params.sack_assoc_id && sctp_style(sk, UDP))
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return -EINVAL;
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if (params.assoc_value) {
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if (params.sack_delay) {
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if (asoc) {
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asoc->sackdelay =
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msecs_to_jiffies(params.assoc_value);
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msecs_to_jiffies(params.sack_delay);
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asoc->param_flags =
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(asoc->param_flags & ~SPP_SACKDELAY) |
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SPP_SACKDELAY_ENABLE;
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} else {
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sp->sackdelay = params.assoc_value;
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sp->sackdelay = params.sack_delay;
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sp->param_flags =
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(sp->param_flags & ~SPP_SACKDELAY) |
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SPP_SACKDELAY_ENABLE;
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}
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} else {
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}
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if (params.sack_freq == 1) {
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if (asoc) {
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asoc->param_flags =
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(asoc->param_flags & ~SPP_SACKDELAY) |
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@ -2382,22 +2406,40 @@ static int sctp_setsockopt_delayed_ack_time(struct sock *sk,
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(sp->param_flags & ~SPP_SACKDELAY) |
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SPP_SACKDELAY_DISABLE;
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}
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} else if (params.sack_freq > 1) {
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if (asoc) {
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asoc->sackfreq = params.sack_freq;
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asoc->param_flags =
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(asoc->param_flags & ~SPP_SACKDELAY) |
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SPP_SACKDELAY_ENABLE;
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} else {
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sp->sackfreq = params.sack_freq;
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sp->param_flags =
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(sp->param_flags & ~SPP_SACKDELAY) |
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SPP_SACKDELAY_ENABLE;
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}
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}
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/* If change is for association, also apply to each transport. */
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if (asoc) {
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list_for_each_entry(trans, &asoc->peer.transport_addr_list,
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transports) {
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if (params.assoc_value) {
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if (params.sack_delay) {
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trans->sackdelay =
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msecs_to_jiffies(params.assoc_value);
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msecs_to_jiffies(params.sack_delay);
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trans->param_flags =
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(trans->param_flags & ~SPP_SACKDELAY) |
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SPP_SACKDELAY_ENABLE;
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} else {
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}
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if (params.sack_delay == 1) {
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trans->param_flags =
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(trans->param_flags & ~SPP_SACKDELAY) |
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SPP_SACKDELAY_DISABLE;
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} else if (params.sack_freq > 1) {
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trans->sackfreq = params.sack_freq;
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trans->param_flags =
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(trans->param_flags & ~SPP_SACKDELAY) |
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SPP_SACKDELAY_ENABLE;
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}
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}
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}
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@ -3186,8 +3228,8 @@ SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
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retval = sctp_setsockopt_peer_addr_params(sk, optval, optlen);
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break;
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case SCTP_DELAYED_ACK_TIME:
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retval = sctp_setsockopt_delayed_ack_time(sk, optval, optlen);
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case SCTP_DELAYED_ACK:
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retval = sctp_setsockopt_delayed_ack(sk, optval, optlen);
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break;
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case SCTP_PARTIAL_DELIVERY_POINT:
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retval = sctp_setsockopt_partial_delivery_point(sk, optval, optlen);
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@ -3446,6 +3488,7 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
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sp->pathmaxrxt = sctp_max_retrans_path;
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sp->pathmtu = 0; // allow default discovery
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sp->sackdelay = sctp_sack_timeout;
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sp->sackfreq = 3;
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sp->param_flags = SPP_HB_ENABLE |
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SPP_PMTUD_ENABLE |
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SPP_SACKDELAY_ENABLE;
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@ -3999,70 +4042,91 @@ static int sctp_getsockopt_peer_addr_params(struct sock *sk, int len,
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return 0;
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}
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/* 7.1.23. Delayed Ack Timer (SCTP_DELAYED_ACK_TIME)
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/*
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* 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK)
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*
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* This options will get or set the delayed ack timer. The time is set
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* in milliseconds. If the assoc_id is 0, then this sets or gets the
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* endpoints default delayed ack timer value. If the assoc_id field is
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* non-zero, then the set or get effects the specified association.
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* This option will effect the way delayed acks are performed. This
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* option allows you to get or set the delayed ack time, in
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* milliseconds. It also allows changing the delayed ack frequency.
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* Changing the frequency to 1 disables the delayed sack algorithm. If
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* the assoc_id is 0, then this sets or gets the endpoints default
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* values. If the assoc_id field is non-zero, then the set or get
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* effects the specified association for the one to many model (the
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* assoc_id field is ignored by the one to one model). Note that if
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* sack_delay or sack_freq are 0 when setting this option, then the
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* current values will remain unchanged.
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*
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* struct sctp_assoc_value {
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* sctp_assoc_t assoc_id;
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* uint32_t assoc_value;
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* };
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* struct sctp_sack_info {
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* sctp_assoc_t sack_assoc_id;
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* uint32_t sack_delay;
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* uint32_t sack_freq;
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* };
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*
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* assoc_id - This parameter, indicates which association the
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* user is preforming an action upon. Note that if
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* this field's value is zero then the endpoints
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* default value is changed (effecting future
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* associations only).
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* sack_assoc_id - This parameter, indicates which association the user
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* is performing an action upon. Note that if this field's value is
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* zero then the endpoints default value is changed (effecting future
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* associations only).
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*
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* assoc_value - This parameter contains the number of milliseconds
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* that the user is requesting the delayed ACK timer
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* be set to. Note that this value is defined in
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* the standard to be between 200 and 500 milliseconds.
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* sack_delay - This parameter contains the number of milliseconds that
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* the user is requesting the delayed ACK timer be set to. Note that
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* this value is defined in the standard to be between 200 and 500
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* milliseconds.
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*
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* Note: a value of zero will leave the value alone,
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* but disable SACK delay. A non-zero value will also
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* enable SACK delay.
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* sack_freq - This parameter contains the number of packets that must
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* be received before a sack is sent without waiting for the delay
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* timer to expire. The default value for this is 2, setting this
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* value to 1 will disable the delayed sack algorithm.
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*/
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static int sctp_getsockopt_delayed_ack_time(struct sock *sk, int len,
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static int sctp_getsockopt_delayed_ack(struct sock *sk, int len,
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char __user *optval,
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int __user *optlen)
|
||||
{
|
||||
struct sctp_assoc_value params;
|
||||
struct sctp_sack_info params;
|
||||
struct sctp_association *asoc = NULL;
|
||||
struct sctp_sock *sp = sctp_sk(sk);
|
||||
|
||||
if (len < sizeof(struct sctp_assoc_value))
|
||||
if (len >= sizeof(struct sctp_sack_info)) {
|
||||
len = sizeof(struct sctp_sack_info);
|
||||
|
||||
if (copy_from_user(¶ms, optval, len))
|
||||
return -EFAULT;
|
||||
} else if (len == sizeof(struct sctp_assoc_value)) {
|
||||
printk(KERN_WARNING "SCTP: Use of struct sctp_sack_info "
|
||||
"in delayed_ack socket option deprecated\n");
|
||||
printk(KERN_WARNING "SCTP: struct sctp_sack_info instead\n");
|
||||
if (copy_from_user(¶ms, optval, len))
|
||||
return -EFAULT;
|
||||
} else
|
||||
return - EINVAL;
|
||||
|
||||
len = sizeof(struct sctp_assoc_value);
|
||||
|
||||
if (copy_from_user(¶ms, optval, len))
|
||||
return -EFAULT;
|
||||
|
||||
/* Get association, if assoc_id != 0 and the socket is a one
|
||||
/* Get association, if sack_assoc_id != 0 and the socket is a one
|
||||
* to many style socket, and an association was not found, then
|
||||
* the id was invalid.
|
||||
*/
|
||||
asoc = sctp_id2assoc(sk, params.assoc_id);
|
||||
if (!asoc && params.assoc_id && sctp_style(sk, UDP))
|
||||
asoc = sctp_id2assoc(sk, params.sack_assoc_id);
|
||||
if (!asoc && params.sack_assoc_id && sctp_style(sk, UDP))
|
||||
return -EINVAL;
|
||||
|
||||
if (asoc) {
|
||||
/* Fetch association values. */
|
||||
if (asoc->param_flags & SPP_SACKDELAY_ENABLE)
|
||||
params.assoc_value = jiffies_to_msecs(
|
||||
if (asoc->param_flags & SPP_SACKDELAY_ENABLE) {
|
||||
params.sack_delay = jiffies_to_msecs(
|
||||
asoc->sackdelay);
|
||||
else
|
||||
params.assoc_value = 0;
|
||||
params.sack_freq = asoc->sackfreq;
|
||||
|
||||
} else {
|
||||
params.sack_delay = 0;
|
||||
params.sack_freq = 1;
|
||||
}
|
||||
} else {
|
||||
/* Fetch socket values. */
|
||||
if (sp->param_flags & SPP_SACKDELAY_ENABLE)
|
||||
params.assoc_value = sp->sackdelay;
|
||||
else
|
||||
params.assoc_value = 0;
|
||||
if (sp->param_flags & SPP_SACKDELAY_ENABLE) {
|
||||
params.sack_delay = sp->sackdelay;
|
||||
params.sack_freq = sp->sackfreq;
|
||||
} else {
|
||||
params.sack_delay = 0;
|
||||
params.sack_freq = 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (copy_to_user(optval, ¶ms, len))
|
||||
|
@ -5218,8 +5282,8 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
|
|||
retval = sctp_getsockopt_peer_addr_params(sk, len, optval,
|
||||
optlen);
|
||||
break;
|
||||
case SCTP_DELAYED_ACK_TIME:
|
||||
retval = sctp_getsockopt_delayed_ack_time(sk, len, optval,
|
||||
case SCTP_DELAYED_ACK:
|
||||
retval = sctp_getsockopt_delayed_ack(sk, len, optval,
|
||||
optlen);
|
||||
break;
|
||||
case SCTP_INITMSG:
|
||||
|
|
Loading…
Reference in a new issue