diff options
| author | Keith <keith@rhizomatica.org> | 2019-04-29 18:23:10 +0100 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2019-05-02 09:38:28 +0000 |
| commit | bfd67d2f69d49003095c2aec624ba38e85aa8bd5 (patch) | |
| tree | be8cef89bf0eb4e3341630d14a4160d6949b078d /src | |
| parent | 6c0586ac7b8e62ccf7a44f0898c705e7c6749322 (diff) | |
Echo zero byte XID-Field of Type L3_PAR
After Activate PDP Context request, Motorola KRZR
sends a zero length XID-Field of Type L3 Parameters
If this is not echoed back, the phone will send
Deactivate PDP Context request with SM Cause:
LLC or SNDCP failure(A/Gb only) (25)
Closes: OS#3426
Change-Id: Ibd75f7b943c84ed7264481fa2e4bc3cb2f6745d4
Diffstat (limited to 'src')
| -rw-r--r-- | src/gprs/gprs_sndcp.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/gprs/gprs_sndcp.c b/src/gprs/gprs_sndcp.c index 23d1e9a22..d9aa1e576 100644 --- a/src/gprs/gprs_sndcp.c +++ b/src/gprs/gprs_sndcp.c @@ -1120,6 +1120,14 @@ int sndcp_sn_xid_ind(struct gprs_llc_xid_field *xid_field_indication, OSMO_ASSERT(xid_field_response); OSMO_ASSERT(lle); + /* Some phones send zero byte length SNDCP frames + * and do require a confirmation response. */ + if (xid_field_indication->data_len == 0) { + xid_field_response->type = GPRS_LLC_XID_T_L3_PAR; + xid_field_response->data_len = 0; + return 0; + } + /* Parse SNDCP-CID XID-Field */ comp_fields = gprs_sndcp_parse_xid(&version, lle->llme, xid_field_indication->data, |