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Gb: Add functions for sending flow control messages from BSS side

This commit is contained in:
Harald Welte 2012-09-10 08:56:04 +02:00
parent 30fabdf61d
commit e92866bbb1
2 changed files with 113 additions and 0 deletions
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8
include/osmocom/gprs/gprs_bssgp_bss.h
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@ -64,4 +64,12 @@ int bssgp_tx_ul_ud(struct bssgp_bvc_ctx *bctx, uint32_t tlli,
int bssgp_rx_paging(struct bssgp_paging_info *pinfo,
struct msgb *msg);
int bssgp_tx_fc_bvc(struct bssgp_bvc_ctx *bctx, uint32_t tag,
uint32_t bucket_size, uint32_t bucket_leak_rate,
uint16_t bmax_default_ms, uint32_t r_default_ms,
uint8_t *bucket_full_ratio, uint32_t *queue_delay_ms);
int bssgp_tx_fc_ms(struct bssgp_bvc_ctx *bctx, uint32_t tag,
uint32_t ms_bucket_size, uint32_t bucket_leak_rate,
uint8_t *bucket_full_ratio);
#endif

105
src/gb/gprs_bssgp_bss.c
View File

@ -303,6 +303,111 @@ int bssgp_tx_bvc_reset(struct bssgp_bvc_ctx *bctx, uint16_t bvci, uint8_t cause)
return gprs_ns_sendmsg(bssgp_nsi, msg);
}
/*! \brief Transmit a FLOW_CONTROL-BVC (Chapter 10.4.4)
* \param[in] bctx BVC Context
* \param[in] bucket_size Maximum bucket size in octets
* \param[in] bucket_leak_rate Bucket leak rate in octets/sec
* \param[in] bmax_default_ms Maximum bucket size default for MS
* \param[in] r_default_ms Bucket leak rate default for MS in octets/sec
* \param[in] bucket_full_ratio Ratio (in percent) of queue filling
* \param[in] queue_delay_ms Average queuing delay in milliseconds
*/
int bssgp_tx_fc_bvc(struct bssgp_bvc_ctx *bctx, uint32_t tag,
uint32_t bucket_size, uint32_t bucket_leak_rate,
uint16_t bmax_default_ms, uint32_t r_default_ms,
uint8_t *bucket_full_ratio, uint32_t *queue_delay_ms)
{
struct msgb *msg;
struct bssgp_normal_hdr *bgph;
uint16_t e_bucket_size, e_leak_rate, e_r_default_ms;
uint16_t e_queue_delay = 0; /* to make gcc happy */
if ((bucket_size / 100) > 0xffff)
return -EINVAL;
e_bucket_size = bucket_size / 100;
if ((bucket_leak_rate * 8 / 100) > 0xffff)
return -EINVAL;
e_leak_rate = (bucket_leak_rate * 8) / 100;
if ((r_default_ms * 8 / 100) > 0xffff)
return -EINVAL;
e_r_default_ms = (r_default_ms * 8) / 100;
if (queue_delay_ms) {
if ((*queue_delay_ms / 10) > 60000)
return -EINVAL;
else if (*queue_delay_ms == 0xFFFFFFFF)
e_queue_delay = 0xFFFF;
else
e_queue_delay = *queue_delay_ms / 10;
}
msg = bssgp_msgb_alloc();
bgph = (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph));
msgb_nsei(msg) = bctx->nsei;
msgb_bvci(msg) = 0; /* Signalling */
bgph->pdu_type = BSSGP_PDUT_FLOW_CONTROL_BVC;
msgb_tvlv_put(msg, BSSGP_IE_TAG, sizeof(tag), (uint8_t *)&tag);
msgb_tvlv_put(msg, BSSGP_IE_BVC_BUCKET_SIZE,
sizeof(e_bucket_size), (uint8_t *) &e_bucket_size);
msgb_tvlv_put(msg, BSSGP_IE_BUCKET_LEAK_RATE,
sizeof(e_leak_rate), (uint8_t *) &e_leak_rate);
msgb_tvlv_put(msg, BSSGP_IE_BMAX_DEFAULT_MS,
sizeof(bmax_default_ms), (uint8_t *) &bmax_default_ms);
msgb_tvlv_put(msg, BSSGP_IE_R_DEFAULT_MS,
sizeof(e_r_default_ms), (uint8_t *) &e_r_default_ms);
if (bucket_full_ratio)
msgb_tvlv_put(msg, BSSGP_IE_BUCKET_FULL_RATIO,
1, bucket_full_ratio);
if (queue_delay_ms)
msgb_tvlv_put(msg, BSSGP_IE_BVC_MEASUREMENT,
sizeof(e_queue_delay),
(uint8_t *) &e_queue_delay);
return gprs_ns_sendmsg(bssgp_nsi, msg);
}
/*! \brief Transmit a FLOW_CONTROL-MS (Chapter 10.4.6)
* \param[in] bctx BVC Context
* \param[in] ms_bucket_size Maximum bucket size in octets
* \param[in] bucket_leak_rate Bucket leak rate in octets/sec
* \param[in] bucket_full_ratio Ratio (in percent) of queue filling
*/
int bssgp_tx_fc_ms(struct bssgp_bvc_ctx *bctx, uint32_t tag,
uint32_t ms_bucket_size, uint32_t bucket_leak_rate,
uint8_t *bucket_full_ratio)
{
struct msgb *msg;
struct bssgp_normal_hdr *bgph;
uint16_t e_bucket_size, e_leak_rate;
if ((ms_bucket_size / 100) > 0xffff)
return -EINVAL;
e_bucket_size = ms_bucket_size / 100;
if ((bucket_leak_rate * 8 / 100) > 0xffff)
return -EINVAL;
e_leak_rate = (bucket_leak_rate * 8) / 100;
msg = bssgp_msgb_alloc();
bgph = (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph));
msgb_nsei(msg) = bctx->nsei;
msgb_bvci(msg) = 0; /* Signalling */
bgph->pdu_type = BSSGP_PDUT_FLOW_CONTROL_MS;
msgb_tvlv_put(msg, BSSGP_IE_TAG, sizeof(tag), (uint8_t *)&tag);
msgb_tvlv_put(msg, BSSGP_IE_MS_BUCKET_SIZE,
sizeof(e_bucket_size), (uint8_t *) &e_bucket_size);
msgb_tvlv_put(msg, BSSGP_IE_BUCKET_LEAK_RATE,
sizeof(e_leak_rate), (uint8_t *) &e_leak_rate);
if (bucket_full_ratio)
msgb_tvlv_put(msg, BSSGP_IE_BUCKET_FULL_RATIO,
1, bucket_full_ratio);
return gprs_ns_sendmsg(bssgp_nsi, msg);
}
/*! \brief RL-UL-UNITDATA.req (Chapter 10.2.2) */
int bssgp_tx_ul_ud(struct bssgp_bvc_ctx *bctx, uint32_t tlli,