diff options
author | Harald Welte <laforge@gnumonks.org> | 2010-05-28 16:12:57 +0200 |
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committer | Harald Welte <laforge@gnumonks.org> | 2010-05-28 16:12:57 +0200 |
commit | f15497c1a3befd350f4e40be8d47bc62e49069fe (patch) | |
tree | 24b9ae8be90035e7793828bce6c93ae03c8b15cc /openbsc/src/gprs/gprs_ns_frgre.c | |
parent | 57a9cf279731633f88614eb0b7be8c81bfe8777c (diff) |
[GPRS] NS: Don't hand Frame Relay LMI packets into the NS code
Diffstat (limited to 'openbsc/src/gprs/gprs_ns_frgre.c')
-rw-r--r-- | openbsc/src/gprs/gprs_ns_frgre.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/openbsc/src/gprs/gprs_ns_frgre.c b/openbsc/src/gprs/gprs_ns_frgre.c index e22b0c72..326bd70f 100644 --- a/openbsc/src/gprs/gprs_ns_frgre.c +++ b/openbsc/src/gprs/gprs_ns_frgre.c @@ -206,19 +206,29 @@ int gprs_ns_rcvmsg(struct gprs_ns_inst *nsi, struct msgb *msg, static int handle_nsfrgre_read(struct bsc_fd *bfd) { - int error; + int rc; struct sockaddr_in saddr; struct gprs_ns_inst *nsi = bfd->data; - struct msgb *msg = read_nsfrgre_msg(bfd, &error, &saddr); + struct msgb *msg; + uint16_t dlci; + msg = read_nsfrgre_msg(bfd, &rc, &saddr); if (!msg) - return error; + return rc; - error = gprs_ns_rcvmsg(nsi, msg, &saddr, GPRS_NS_LL_FR_GRE); + dlci = ntohs(saddr.sin_port); + if (dlci == 0 || dlci == 1023) { + LOGP(DNS, LOGL_INFO, "Received FR on LMI DLCI %u - ignoring\n", + dlci); + rc = 0; + goto out; + } + rc = gprs_ns_rcvmsg(nsi, msg, &saddr, GPRS_NS_LL_FR_GRE); +out: msgb_free(msg); - return error; + return rc; } static int handle_nsfrgre_write(struct bsc_fd *bfd) |