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add two new RSL utility functions

This commit is contained in:
Harald Welte 2010-03-02 21:59:20 +01:00
parent fdd0a70093
commit f08eabf234
2 changed files with 55 additions and 0 deletions
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7
include/osmocore/rsl.h
View File

@ -21,4 +21,11 @@ const char *rsl_err_name(uint8_t err);
/* Section 3.3.2.3 TS 05.02. I think this looks like a table */
int rsl_ccch_conf_to_bs_cc_chans(int ccch_conf);
/* Push a RSL RLL header with L3_INFO IE */
int rsl_rll_push_l3(struct msgb *msg, uint8_t msg_type,
uint8_t chan_nr, uint8_t link_id);
/* Allocate msgb and fill with simple RSL RLL header */
struct msgb *rsl_rll_simple(uint8_t msg_type, uint8_t chan_nr,
uint8_t link_id);
#endif /* _OSMOCORE_RSL_H */

48
src/rsl.c
View File

@ -237,3 +237,51 @@ int rsl_ccch_conf_to_bs_ccch_sdcch_comb(int ccch_conf)
return -1;
}
}
/* Push a RSL RLL header with L3_INFO IE */
int rsl_rll_push_l3(struct msgb *msg, uint8_t msg_type,
uint8_t chan_nr, uint8_t link_id)
{
uint8_t l3_len = msg->tail - (uint8_t *)msgb_l3(msg);
struct abis_rsl_rll_hdr *rh;
/* construct a RSLms RLL message (DATA INDICATION, UNIT DATA
* INDICATION) and send it off via RSLms */
/* Push the L3 IE tag and lengh */
msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len);
/* Then push the RSL header */
rh = (struct abis_rsl_rll_hdr *) msgb_push(msg, sizeof(*rh));
rsl_init_rll_hdr(rh, msg_type);
rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP;
rh->chan_nr = chan_nr;
rh->link_id = link_id;
/* set the l2 header pointer */
msg->l2h = (uint8_t *)rh;
return 0;
}
struct msgb *rsl_rll_simple(uint8_t msg_type, uint8_t chan_nr,
uint8_t link_id)
{
struct abis_rsl_rll_hdr *rh;
struct msgb *msg = msgb_alloc(sizeof(*rh), "rsl_rll_simple");
if (!msg)
return NULL;
/* put the RSL header */
rh = (struct abis_rsl_rll_hdr *) msgb_put(msg, sizeof(*rh));
rsl_init_rll_hdr(rh, msg_type);
rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP;
rh->chan_nr = chan_nr;
rh->link_id = link_id;
/* set the l2 header pointer */
msg->l2h = (uint8_t *)rh;
return msg;
}