cellular-infrastructure
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cellmgr-ng
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sctp: Only handle traffic with the payload type of M2UA

This commit is contained in:
Holger Hans Peter Freyther 2011-02-25 19:47:55 +01:00
parent 0e6cbc62b2
commit 718d4ba66c
1 changed files with 9 additions and 1 deletions
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10
src/sctp_m2ua.c
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@ -30,6 +30,8 @@
#include <string.h>
#include <unistd.h>
#define SCTP_PPID_M2UA 2
static struct mtp_m2ua_link *find_m2ua_link(struct sctp_m2ua_transport *trans, int link_index)
{
struct mtp_m2ua_link *link;
@ -554,6 +556,12 @@ static int m2ua_conn_read(struct bsc_fd *fd)
return -1;
}
if (ntohl(info.sinfo_ppid) != SCTP_PPID_M2UA) {
LOGP(DINP, LOGL_ERROR, "Only M2UA is allowed on this socket.\n");
msgb_free(msg);
return -1;
}
msgb_put(msg, rc);
LOGP(DINP, LOGL_DEBUG, "Read %d on stream: %d ssn: %d assoc: %d\n",
rc, info.sinfo_stream, info.sinfo_ssn, info.sinfo_assoc_id);
@ -600,7 +608,7 @@ static int sctp_m2ua_write(struct mtp_link *link, struct msgb *msg)
memset(&info, 0, sizeof(info));
info.sinfo_stream = 1;
info.sinfo_assoc_id = 1;
info.sinfo_ppid = htonl(2);
info.sinfo_ppid = htonl(SCTP_PPID_M2UA);
m2ua_conn_send(mlink->conn, m2ua, &info);
m2ua_msg_free(m2ua);