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authorPhilipp Maier <pmaier@sysmocom.de>2018-01-25 18:59:42 +0100
committerHarald Welte <laforge@gnumonks.org>2018-02-19 08:38:21 +0000
commitbf1fea0928183f51e994c3f2b0e0f0ca831fd7b8 (patch)
treee52f155143772553ddd2006e00dc4e43072cab94 /src/osmo-bts-octphy
parentefa55a454174da12a44c750377b3605d9bfbf7ef (diff)
rsl: do not allow MODE MODIFY request with unsupp. codec/rate
When the BSC sends a MODE MODIFY request with an unsupported codec, the BTS must respond with a negative acknowledge. Currently the codec parameter is not checked at all, which may lead into malfunction or crash of the BTS. - Introduce a mechanism to check the codec/rate against a table that is set up in the phy specific code. - Add tables with supported codec/rate combinations for octphy, sysmobts, and trx. Change-Id: Id9b222b7ab19ece90591718bc562b3a8c5e02023 Related: SYS#3212
Diffstat (limited to 'src/osmo-bts-octphy')
-rw-r--r--src/osmo-bts-octphy/l1_if.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/osmo-bts-octphy/l1_if.c b/src/osmo-bts-octphy/l1_if.c
index fce34841..dde993d5 100644
--- a/src/osmo-bts-octphy/l1_if.c
+++ b/src/osmo-bts-octphy/l1_if.c
@@ -76,6 +76,14 @@
/* timeout until which we expect PHY to respond */
#define CMD_TIMEOUT 5
+/* Table with channel rate / and codec configuration that are supported
+ * by the hardware bts_supports_cm() */
+static const struct bts_cm bts_model_supported_cm[] = {
+ { GSM_PCHAN_TCH_F, GSM48_CMODE_SPEECH_V1},
+ { GSM_PCHAN_TCH_H, GSM48_CMODE_SPEECH_V1},
+ { _GSM_PCHAN_MAX, 0 }
+};
+
/* allocate a msgb for a Layer1 primitive */
struct msgb *l1p_msgb_alloc(void)
{
@@ -776,6 +784,7 @@ int bts_model_init(struct gsm_bts *bts)
bts->variant = BTS_OSMO_OCTPHY;
btsb = bts_role_bts(bts);
btsb->support.ciphers = CIPHER_A5(1) | CIPHER_A5(2) | CIPHER_A5(3);
+ btsb->support.cm = bts_model_supported_cm;
/* FIXME: what is the nominal transmit power of the PHY/board? */
bts->c0->nominal_power = 15;