Signed-off-by: Xiangzhong Chang <[email protected]>
---
net/sctp/outqueue.c | 142 ++++++++++++++++++++++++---------------------------
1 file changed, 68 insertions(+), 74 deletions(-)
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index 94df758..f10d848 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -1357,84 +1357,78 @@ static void sctp_check_transmitted(struct sctp_outq *q,
tsn = ntohl(tchunk->subh.data_hdr->tsn);
if (sctp_acked(sack, tsn)) {
- /* If this queue is the retransmit queue, the
- * retransmit timer has already reclaimed
- * the outstanding bytes for this chunk, so only
- * count bytes associated with a transport.
- */
- if (transport) {
- /* If this chunk is being used for RTT
- * measurement, calculate the RTT and update
- * the RTO using this value.
- *
- * 6.3.1 C5) Karn's algorithm: RTT measurements
- * MUST NOT be made using packets that were
- * retransmitted (and thus for which it is
- * ambiguous whether the reply was for the
- * first instance of the packet or a later
- * instance).
- */
- if (!tchunk->tsn_gap_acked &&
- tchunk->rtt_in_progress) {
- tchunk->rtt_in_progress = 0;
- rtt = jiffies - tchunk->sent_at;
- sctp_transport_update_rto(transport,
- rtt);
- }
- }
-
- /* If the chunk hasn't been marked as ACKED,
- * mark it and account bytes_acked if the
- * chunk had a valid transport (it will not
- * have a transport if ASCONF had deleted it
- * while DATA was outstanding).
- */
if (!tchunk->tsn_gap_acked) {
- tchunk->tsn_gap_acked = 1;
- *highest_new_tsn_in_sack = tsn;
- bytes_acked += sctp_data_size(tchunk);
- if (!tchunk->transport)
- migrate_bytes += sctp_data_size(tchunk);
- forward_progress = true;
+ /* If this queue is the retransmit queue, the
+ * retransmit timer has already reclaimed
+ * the outstanding bytes for this chunk, so only
+ * count bytes associated with a transport.
+ *
+ * If this chunk is being used for RTT
+ * measurement, calculate the RTT and update
+ * the RTO using this value.
+ *
+ * 6.3.1 C5) Karn's algorithm: RTT measurements
+ * MUST NOT be made using packets that were
+ * retransmitted (and thus for which it is
+ * ambiguous whether the reply was for the
+ * first instance of the packet or a later
+ * instance).
+ */
+ if (transport && tchunk->rtt_in_progress) {
+ tchunk->rtt_in_progress = 0;
+ rtt = jiffies - tchunk->sent_at;
+ sctp_transport_update_rto(transport,
+ rtt);
+ }
+
+ /* If the chunk hasn't been marked as ACKED,
+ * mark it and account bytes_acked if the
+ * chunk had a valid transport (it will not
+ * have a transport if ASCONF had deleted it
+ * while DATA was outstanding).
+ */
+ tchunk->tsn_gap_acked = 1;
+ *highest_new_tsn_in_sack = tsn;
+ bytes_acked += sctp_data_size(tchunk);
+ if (!tchunk->transport)
+ migrate_bytes += sctp_data_size(tchunk);
+ forward_progress = true;
+
+ /*
+ * SFR-CACC algorithm:
+ * 2) If the SACK contains gap acks
+ * and the flag CHANGEOVER_ACTIVE is
+ * set the receiver of the SACK MUST
+ * take the following action:
+ *
+ * B) For each TSN t being acked that
+ * has not been acked in any SACK so
+ * far, set cacc_saw_newack to 1 for
+ * the destination that the TSN was
+ * sent to.
+ */
+ if (transport &&
+ sack->num_gap_ack_blocks &&
+ q->asoc->peer.primary_path->cacc.
+ changeover_active)
+ transport->cacc.cacc_saw_newack = 1;
}
if (TSN_lte(tsn, sack_ctsn)) {
- /* RFC 2960 6.3.2 Retransmission Timer Rules
- *
- * R3) Whenever a SACK is received
- * that acknowledges the DATA chunk
- * with the earliest outstanding TSN
- * for that address, restart T3-rtx
- * timer for that address with its
- * current RTO.
- */
- restart_timer = 1;
- forward_progress = true;
-
- if (!tchunk->tsn_gap_acked) {
- /*
- * SFR-CACC algorithm:
- * 2) If the SACK contains gap acks
- * and the flag CHANGEOVER_ACTIVE is
- * set the receiver of the SACK MUST
- * take the following action:
- *
- * B) For each TSN t being acked that
- * has not been acked in any SACK so
- * far, set cacc_saw_newack to 1 for
- * the destination that the TSN was
- * sent to.
- */
- if (transport &&
- sack->num_gap_ack_blocks &&
- q->asoc->peer.primary_path->cacc.
- changeover_active)
- transport->cacc.cacc_saw_newack
- = 1;
- }
-
- list_add_tail(&tchunk->transmitted_list,
- &q->sacked);
+ /* RFC 2960 6.3.2 Retransmission Timer Rules
+ *
+ * R3) Whenever a SACK is received
+ * that acknowledges the DATA chunk
+ * with the earliest outstanding TSN
+ * for that address, restart T3-rtx
+ * timer for that address with its
+ * current RTO.
+ */
+ restart_timer = 1;
+ forward_progress = true;
+
+ list_add_tail(&tchunk->transmitted_list,
+ &q->sacked);
} else {
/* RFC2960 7.2.4, sctpimpguide-05 2.8.2
* M2) Each time a SACK arrives reporting
--
1.7.9.5
On 10/15/2013 12:59 PM, Chang Xiangzhong wrote:
> Signed-off-by: Xiangzhong Chang <[email protected]>
> ---
> net/sctp/outqueue.c | 142 ++++++++++++++++++++++++---------------------------
> 1 file changed, 68 insertions(+), 74 deletions(-)
>
> diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
> index 94df758..f10d848 100644
> --- a/net/sctp/outqueue.c
> +++ b/net/sctp/outqueue.c
> @@ -1357,84 +1357,78 @@ static void sctp_check_transmitted(struct sctp_outq *q,
>
> tsn = ntohl(tchunk->subh.data_hdr->tsn);
> if (sctp_acked(sack, tsn)) {
> - /* If this queue is the retransmit queue, the
> - * retransmit timer has already reclaimed
> - * the outstanding bytes for this chunk, so only
> - * count bytes associated with a transport.
> - */
> - if (transport) {
> - /* If this chunk is being used for RTT
> - * measurement, calculate the RTT and update
> - * the RTO using this value.
> - *
> - * 6.3.1 C5) Karn's algorithm: RTT measurements
> - * MUST NOT be made using packets that were
> - * retransmitted (and thus for which it is
> - * ambiguous whether the reply was for the
> - * first instance of the packet or a later
> - * instance).
> - */
> - if (!tchunk->tsn_gap_acked &&
> - tchunk->rtt_in_progress) {
> - tchunk->rtt_in_progress = 0;
> - rtt = jiffies - tchunk->sent_at;
> - sctp_transport_update_rto(transport,
> - rtt);
> - }
> - }
> -
> - /* If the chunk hasn't been marked as ACKED,
> - * mark it and account bytes_acked if the
> - * chunk had a valid transport (it will not
> - * have a transport if ASCONF had deleted it
> - * while DATA was outstanding).
> - */
> if (!tchunk->tsn_gap_acked) {
> - tchunk->tsn_gap_acked = 1;
> - *highest_new_tsn_in_sack = tsn;
> - bytes_acked += sctp_data_size(tchunk);
> - if (!tchunk->transport)
> - migrate_bytes += sctp_data_size(tchunk);
> - forward_progress = true;
> + /* If this queue is the retransmit queue, the
> + * retransmit timer has already reclaimed
> + * the outstanding bytes for this chunk, so only
> + * count bytes associated with a transport.
> + *
> + * If this chunk is being used for RTT
> + * measurement, calculate the RTT and update
> + * the RTO using this value.
> + *
> + * 6.3.1 C5) Karn's algorithm: RTT measurements
> + * MUST NOT be made using packets that were
> + * retransmitted (and thus for which it is
> + * ambiguous whether the reply was for the
> + * first instance of the packet or a later
> + * instance).
> + */
> + if (transport && tchunk->rtt_in_progress) {
> + tchunk->rtt_in_progress = 0;
> + rtt = jiffies - tchunk->sent_at;
> + sctp_transport_update_rto(transport,
> + rtt);
> + }
> +
> + /* If the chunk hasn't been marked as ACKED,
> + * mark it and account bytes_acked if the
> + * chunk had a valid transport (it will not
> + * have a transport if ASCONF had deleted it
> + * while DATA was outstanding).
> + */
> + tchunk->tsn_gap_acked = 1;
> + *highest_new_tsn_in_sack = tsn;
> + bytes_acked += sctp_data_size(tchunk);
> + if (!tchunk->transport)
> + migrate_bytes += sctp_data_size(tchunk);
> + forward_progress = true;
> +
> + /*
> + * SFR-CACC algorithm:
> + * 2) If the SACK contains gap acks
> + * and the flag CHANGEOVER_ACTIVE is
> + * set the receiver of the SACK MUST
> + * take the following action:
> + *
> + * B) For each TSN t being acked that
> + * has not been acked in any SACK so
> + * far, set cacc_saw_newack to 1 for
> + * the destination that the TSN was
> + * sent to.
> + */
> + if (transport &&
> + sack->num_gap_ack_blocks &&
> + q->asoc->peer.primary_path->cacc.
> + changeover_active)
> + transport->cacc.cacc_saw_newack = 1;
> }
Indents should be tab based.
This is a bit more of a re-write that is needed for the this particualar
patch. What's wrong with just doing this?
@@ -1396,6 +1396,25 @@ static void sctp_check_transmitted(struct
sctp_outq *q,
if (!tchunk->transport)
migrate_bytes +=
sctp_data_size(tchunk);
forward_progress = true;
+
+ /*
+ * SFR-CACC algorithm:
+ * 2) If the SACK contains gap acks
+ * and the flag CHANGEOVER_ACTIVE is
+ * set the receiver of the SACK MUST
+ * take the following action:
+ *
+ * B) For each TSN t being acked that
+ * has not been acked in any SACK so
+ * far, set cacc_saw_newack to 1 for
+ * the destination that the TSN was
+ * sent to.
+ */
+ if (transport &&
+ sack->num_gap_ack_blocks &&
+ q->asoc->peer.primary_path->cacc.
+ changeover_active)
+ transport->cacc.cacc_saw_newack = 1;
}
if (TSN_lte(tsn, sack_ctsn)) {
-vlad
>
> if (TSN_lte(tsn, sack_ctsn)) {
> - /* RFC 2960 6.3.2 Retransmission Timer Rules
> - *
> - * R3) Whenever a SACK is received
> - * that acknowledges the DATA chunk
> - * with the earliest outstanding TSN
> - * for that address, restart T3-rtx
> - * timer for that address with its
> - * current RTO.
> - */
> - restart_timer = 1;
> - forward_progress = true;
> -
> - if (!tchunk->tsn_gap_acked) {
> - /*
> - * SFR-CACC algorithm:
> - * 2) If the SACK contains gap acks
> - * and the flag CHANGEOVER_ACTIVE is
> - * set the receiver of the SACK MUST
> - * take the following action:
> - *
> - * B) For each TSN t being acked that
> - * has not been acked in any SACK so
> - * far, set cacc_saw_newack to 1 for
> - * the destination that the TSN was
> - * sent to.
> - */
> - if (transport &&
> - sack->num_gap_ack_blocks &&
> - q->asoc->peer.primary_path->cacc.
> - changeover_active)
> - transport->cacc.cacc_saw_newack
> - = 1;
> - }
> -
> - list_add_tail(&tchunk->transmitted_list,
> - &q->sacked);
> + /* RFC 2960 6.3.2 Retransmission Timer Rules
> + *
> + * R3) Whenever a SACK is received
> + * that acknowledges the DATA chunk
> + * with the earliest outstanding TSN
> + * for that address, restart T3-rtx
> + * timer for that address with its
> + * current RTO.
> + */
> + restart_timer = 1;
> + forward_progress = true;
> +
> + list_add_tail(&tchunk->transmitted_list,
> + &q->sacked);
> } else {
> /* RFC2960 7.2.4, sctpimpguide-05 2.8.2
> * M2) Each time a SACK arrives reporting
>
On 10/15/2013 07:25 PM, Vlad Yasevich wrote:
> On 10/15/2013 12:59 PM, Chang Xiangzhong wrote:
>> Signed-off-by: Xiangzhong Chang <[email protected]>
>> ---
>> net/sctp/outqueue.c | 142
>> ++++++++++++++++++++++++---------------------------
>> 1 file changed, 68 insertions(+), 74 deletions(-)
>>
>> diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
>> index 94df758..f10d848 100644
>> --- a/net/sctp/outqueue.c
>> +++ b/net/sctp/outqueue.c
>> @@ -1357,84 +1357,78 @@ static void sctp_check_transmitted(struct
>> sctp_outq *q,
>>
>> tsn = ntohl(tchunk->subh.data_hdr->tsn);
>> if (sctp_acked(sack, tsn)) {
>> - /* If this queue is the retransmit queue, the
>> - * retransmit timer has already reclaimed
>> - * the outstanding bytes for this chunk, so only
>> - * count bytes associated with a transport.
>> - */
>> - if (transport) {
>> - /* If this chunk is being used for RTT
>> - * measurement, calculate the RTT and update
>> - * the RTO using this value.
>> - *
>> - * 6.3.1 C5) Karn's algorithm: RTT measurements
>> - * MUST NOT be made using packets that were
>> - * retransmitted (and thus for which it is
>> - * ambiguous whether the reply was for the
>> - * first instance of the packet or a later
>> - * instance).
>> - */
>> - if (!tchunk->tsn_gap_acked &&
>> - tchunk->rtt_in_progress) {
>> - tchunk->rtt_in_progress = 0;
>> - rtt = jiffies - tchunk->sent_at;
>> - sctp_transport_update_rto(transport,
>> - rtt);
>> - }
>> - }
>> -
>> - /* If the chunk hasn't been marked as ACKED,
>> - * mark it and account bytes_acked if the
>> - * chunk had a valid transport (it will not
>> - * have a transport if ASCONF had deleted it
>> - * while DATA was outstanding).
>> - */
>> if (!tchunk->tsn_gap_acked) {
>> - tchunk->tsn_gap_acked = 1;
>> - *highest_new_tsn_in_sack = tsn;
>> - bytes_acked += sctp_data_size(tchunk);
>> - if (!tchunk->transport)
>> - migrate_bytes += sctp_data_size(tchunk);
>> - forward_progress = true;
>> + /* If this queue is the retransmit queue, the
>> + * retransmit timer has already reclaimed
>> + * the outstanding bytes for this chunk, so only
>> + * count bytes associated with a transport.
>> + *
>> + * If this chunk is being used for RTT
>> + * measurement, calculate the RTT and update
>> + * the RTO using this value.
>> + *
>> + * 6.3.1 C5) Karn's algorithm: RTT measurements
>> + * MUST NOT be made using packets that were
>> + * retransmitted (and thus for which it is
>> + * ambiguous whether the reply was for the
>> + * first instance of the packet or a later
>> + * instance).
>> + */
>> + if (transport && tchunk->rtt_in_progress) {
>> + tchunk->rtt_in_progress = 0;
>> + rtt = jiffies - tchunk->sent_at;
>> + sctp_transport_update_rto(transport,
>> + rtt);
>> + }
>> +
>> + /* If the chunk hasn't been marked as ACKED,
>> + * mark it and account bytes_acked if the
>> + * chunk had a valid transport (it will not
>> + * have a transport if ASCONF had deleted it
>> + * while DATA was outstanding).
>> + */
>> + tchunk->tsn_gap_acked = 1;
>> + *highest_new_tsn_in_sack = tsn;
>> + bytes_acked += sctp_data_size(tchunk);
>> + if (!tchunk->transport)
>> + migrate_bytes += sctp_data_size(tchunk);
>> + forward_progress = true;
>> +
>> + /*
>> + * SFR-CACC algorithm:
>> + * 2) If the SACK contains gap acks
>> + * and the flag CHANGEOVER_ACTIVE is
>> + * set the receiver of the SACK MUST
>> + * take the following action:
>> + *
>> + * B) For each TSN t being acked that
>> + * has not been acked in any SACK so
>> + * far, set cacc_saw_newack to 1 for
>> + * the destination that the TSN was
>> + * sent to.
>> + */
>> + if (transport &&
>> + sack->num_gap_ack_blocks &&
>> + q->asoc->peer.primary_path->cacc.
>> + changeover_active)
>> + transport->cacc.cacc_saw_newack = 1;
>> }
>
> Indents should be tab based.
> This is a bit more of a re-write that is needed for the this
> particualar patch. What's wrong with just doing this?
>
I'm pretty new of kernel dev. So I've make a new patch. What's the
correct way of doing this? just attach the new patch to this email?
-Chang
> @@ -1396,6 +1396,25 @@ static void sctp_check_transmitted(struct
> sctp_outq *q,
> if (!tchunk->transport)
> migrate_bytes +=
> sctp_data_size(tchunk);
> forward_progress = true;
> +
> + /*
> + * SFR-CACC algorithm:
> + * 2) If the SACK contains gap acks
> + * and the flag CHANGEOVER_ACTIVE is
> + * set the receiver of the SACK MUST
> + * take the following action:
> + *
> + * B) For each TSN t being acked that
> + * has not been acked in any SACK so
> + * far, set cacc_saw_newack to 1 for
> + * the destination that the TSN was
> + * sent to.
> + */
> + if (transport &&
> + sack->num_gap_ack_blocks &&
> + q->asoc->peer.primary_path->cacc.
> + changeover_active)
> + transport->cacc.cacc_saw_newack = 1;
> }
>
>
> if (TSN_lte(tsn, sack_ctsn)) {
>
> -vlad
>
>>
>> if (TSN_lte(tsn, sack_ctsn)) {
>> - /* RFC 2960 6.3.2 Retransmission Timer Rules
>> - *
>> - * R3) Whenever a SACK is received
>> - * that acknowledges the DATA chunk
>> - * with the earliest outstanding TSN
>> - * for that address, restart T3-rtx
>> - * timer for that address with its
>> - * current RTO.
>> - */
>> - restart_timer = 1;
>> - forward_progress = true;
>> -
>> - if (!tchunk->tsn_gap_acked) {
>> - /*
>> - * SFR-CACC algorithm:
>> - * 2) If the SACK contains gap acks
>> - * and the flag CHANGEOVER_ACTIVE is
>> - * set the receiver of the SACK MUST
>> - * take the following action:
>> - *
>> - * B) For each TSN t being acked that
>> - * has not been acked in any SACK so
>> - * far, set cacc_saw_newack to 1 for
>> - * the destination that the TSN was
>> - * sent to.
>> - */
>> - if (transport &&
>> - sack->num_gap_ack_blocks &&
>> - q->asoc->peer.primary_path->cacc.
>> - changeover_active)
>> - transport->cacc.cacc_saw_newack
>> - = 1;
>> - }
>> -
>> - list_add_tail(&tchunk->transmitted_list,
>> - &q->sacked);
>> + /* RFC 2960 6.3.2 Retransmission Timer Rules
>> + *
>> + * R3) Whenever a SACK is received
>> + * that acknowledges the DATA chunk
>> + * with the earliest outstanding TSN
>> + * for that address, restart T3-rtx
>> + * timer for that address with its
>> + * current RTO.
>> + */
>> + restart_timer = 1;
>> + forward_progress = true;
>> +
>> + list_add_tail(&tchunk->transmitted_list,
>> + &q->sacked);
>> } else {
>> /* RFC2960 7.2.4, sctpimpguide-05 2.8.2
>> * M2) Each time a SACK arrives reporting
>>
>
On 10/15/2013 01:39 PM, Chang wrote:
>
> On 10/15/2013 07:25 PM, Vlad Yasevich wrote:
>> On 10/15/2013 12:59 PM, Chang Xiangzhong wrote:
>>> Signed-off-by: Xiangzhong Chang <[email protected]>
>>> ---
>>> net/sctp/outqueue.c | 142
>>> ++++++++++++++++++++++++---------------------------
>>> 1 file changed, 68 insertions(+), 74 deletions(-)
>>>
>>> diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
>>> index 94df758..f10d848 100644
>>> --- a/net/sctp/outqueue.c
>>> +++ b/net/sctp/outqueue.c
>>> @@ -1357,84 +1357,78 @@ static void sctp_check_transmitted(struct
>>> sctp_outq *q,
>>>
>>> tsn = ntohl(tchunk->subh.data_hdr->tsn);
>>> if (sctp_acked(sack, tsn)) {
>>> - /* If this queue is the retransmit queue, the
>>> - * retransmit timer has already reclaimed
>>> - * the outstanding bytes for this chunk, so only
>>> - * count bytes associated with a transport.
>>> - */
>>> - if (transport) {
>>> - /* If this chunk is being used for RTT
>>> - * measurement, calculate the RTT and update
>>> - * the RTO using this value.
>>> - *
>>> - * 6.3.1 C5) Karn's algorithm: RTT measurements
>>> - * MUST NOT be made using packets that were
>>> - * retransmitted (and thus for which it is
>>> - * ambiguous whether the reply was for the
>>> - * first instance of the packet or a later
>>> - * instance).
>>> - */
>>> - if (!tchunk->tsn_gap_acked &&
>>> - tchunk->rtt_in_progress) {
>>> - tchunk->rtt_in_progress = 0;
>>> - rtt = jiffies - tchunk->sent_at;
>>> - sctp_transport_update_rto(transport,
>>> - rtt);
>>> - }
>>> - }
>>> -
>>> - /* If the chunk hasn't been marked as ACKED,
>>> - * mark it and account bytes_acked if the
>>> - * chunk had a valid transport (it will not
>>> - * have a transport if ASCONF had deleted it
>>> - * while DATA was outstanding).
>>> - */
>>> if (!tchunk->tsn_gap_acked) {
>>> - tchunk->tsn_gap_acked = 1;
>>> - *highest_new_tsn_in_sack = tsn;
>>> - bytes_acked += sctp_data_size(tchunk);
>>> - if (!tchunk->transport)
>>> - migrate_bytes += sctp_data_size(tchunk);
>>> - forward_progress = true;
>>> + /* If this queue is the retransmit queue, the
>>> + * retransmit timer has already reclaimed
>>> + * the outstanding bytes for this chunk, so only
>>> + * count bytes associated with a transport.
>>> + *
>>> + * If this chunk is being used for RTT
>>> + * measurement, calculate the RTT and update
>>> + * the RTO using this value.
>>> + *
>>> + * 6.3.1 C5) Karn's algorithm: RTT measurements
>>> + * MUST NOT be made using packets that were
>>> + * retransmitted (and thus for which it is
>>> + * ambiguous whether the reply was for the
>>> + * first instance of the packet or a later
>>> + * instance).
>>> + */
>>> + if (transport && tchunk->rtt_in_progress) {
>>> + tchunk->rtt_in_progress = 0;
>>> + rtt = jiffies - tchunk->sent_at;
>>> + sctp_transport_update_rto(transport,
>>> + rtt);
>>> + }
>>> +
>>> + /* If the chunk hasn't been marked as ACKED,
>>> + * mark it and account bytes_acked if the
>>> + * chunk had a valid transport (it will not
>>> + * have a transport if ASCONF had deleted it
>>> + * while DATA was outstanding).
>>> + */
>>> + tchunk->tsn_gap_acked = 1;
>>> + *highest_new_tsn_in_sack = tsn;
>>> + bytes_acked += sctp_data_size(tchunk);
>>> + if (!tchunk->transport)
>>> + migrate_bytes += sctp_data_size(tchunk);
>>> + forward_progress = true;
>>> +
>>> + /*
>>> + * SFR-CACC algorithm:
>>> + * 2) If the SACK contains gap acks
>>> + * and the flag CHANGEOVER_ACTIVE is
>>> + * set the receiver of the SACK MUST
>>> + * take the following action:
>>> + *
>>> + * B) For each TSN t being acked that
>>> + * has not been acked in any SACK so
>>> + * far, set cacc_saw_newack to 1 for
>>> + * the destination that the TSN was
>>> + * sent to.
>>> + */
>>> + if (transport &&
>>> + sack->num_gap_ack_blocks &&
>>> + q->asoc->peer.primary_path->cacc.
>>> + changeover_active)
>>> + transport->cacc.cacc_saw_newack = 1;
>>> }
>>
>> Indents should be tab based.
>> This is a bit more of a re-write that is needed for the this
>> particualar patch. What's wrong with just doing this?
>>
> I'm pretty new of kernel dev. So I've make a new patch. What's the
> correct way of doing this? just attach the new patch to this email?
> -Chang
Send a [PATCH v2] with the same subject as before that contains the
updated patch.
-vlad
>
>> @@ -1396,6 +1396,25 @@ static void sctp_check_transmitted(struct
>> sctp_outq *q,
>> if (!tchunk->transport)
>> migrate_bytes +=
>> sctp_data_size(tchunk);
>> forward_progress = true;
>> +
>> + /*
>> + * SFR-CACC algorithm:
>> + * 2) If the SACK contains gap acks
>> + * and the flag CHANGEOVER_ACTIVE is
>> + * set the receiver of the SACK MUST
>> + * take the following action:
>> + *
>> + * B) For each TSN t being acked that
>> + * has not been acked in any SACK so
>> + * far, set cacc_saw_newack to 1 for
>> + * the destination that the TSN was
>> + * sent to.
>> + */
>> + if (transport &&
>> + sack->num_gap_ack_blocks &&
>> + q->asoc->peer.primary_path->cacc.
>> + changeover_active)
>> + transport->cacc.cacc_saw_newack = 1;
>> }
>>
>>
>> if (TSN_lte(tsn, sack_ctsn)) {
>>
>> -vlad
>>
>>>
>>> if (TSN_lte(tsn, sack_ctsn)) {
>>> - /* RFC 2960 6.3.2 Retransmission Timer Rules
>>> - *
>>> - * R3) Whenever a SACK is received
>>> - * that acknowledges the DATA chunk
>>> - * with the earliest outstanding TSN
>>> - * for that address, restart T3-rtx
>>> - * timer for that address with its
>>> - * current RTO.
>>> - */
>>> - restart_timer = 1;
>>> - forward_progress = true;
>>> -
>>> - if (!tchunk->tsn_gap_acked) {
>>> - /*
>>> - * SFR-CACC algorithm:
>>> - * 2) If the SACK contains gap acks
>>> - * and the flag CHANGEOVER_ACTIVE is
>>> - * set the receiver of the SACK MUST
>>> - * take the following action:
>>> - *
>>> - * B) For each TSN t being acked that
>>> - * has not been acked in any SACK so
>>> - * far, set cacc_saw_newack to 1 for
>>> - * the destination that the TSN was
>>> - * sent to.
>>> - */
>>> - if (transport &&
>>> - sack->num_gap_ack_blocks &&
>>> - q->asoc->peer.primary_path->cacc.
>>> - changeover_active)
>>> - transport->cacc.cacc_saw_newack
>>> - = 1;
>>> - }
>>> -
>>> - list_add_tail(&tchunk->transmitted_list,
>>> - &q->sacked);
>>> + /* RFC 2960 6.3.2 Retransmission Timer Rules
>>> + *
>>> + * R3) Whenever a SACK is received
>>> + * that acknowledges the DATA chunk
>>> + * with the earliest outstanding TSN
>>> + * for that address, restart T3-rtx
>>> + * timer for that address with its
>>> + * current RTO.
>>> + */
>>> + restart_timer = 1;
>>> + forward_progress = true;
>>> +
>>> + list_add_tail(&tchunk->transmitted_list,
>>> + &q->sacked);
>>> } else {
>>> /* RFC2960 7.2.4, sctpimpguide-05 2.8.2
>>> * M2) Each time a SACK arrives reporting
>>>
>>
>