lynxis lazus has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ggsn/+/39238?usp=email )
Change subject: gtp: add internal functions gtp_reqv1c/gtp_respv1c ......................................................................
gtp: add internal functions gtp_reqv1c/gtp_respv1c
Will be used by SGSN Context Req/Resp/Ack.
Change-Id: If1a60a2ea08b74aaf23485e036b9632f38ab4bda --- M gtp/gtp.c 1 file changed, 27 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ggsn refs/changes/38/39238/1
diff --git a/gtp/gtp.c b/gtp/gtp.c index 3209a64..e6180fa 100644 --- a/gtp/gtp.c +++ b/gtp/gtp.c @@ -404,6 +404,18 @@ return 0; }
+static int gtp_reqv1c(struct gsn_t *gsn, uint32_t teic, + union gtp_packet *packet, int len, + const struct in_addr *inetaddr, void *cbp) +{ + packet->flags |= GTP1HDR_F_SEQ; + packet->gtp1l.h.length = hton16(len - GTP1_HEADER_SIZE_SHORT); + packet->gtp1l.h.seq = hton16(gsn->seq_next); + packet->gtp1l.h.tei = hton32(teic); + + return gtp_req_transmit(gsn, 1, inetaddr, packet, len, NULL, cbp); +} + static int gtp_req(struct gsn_t *gsn, uint8_t version, struct pdp_t *pdp, union gtp_packet *packet, int len, const struct in_addr *inetaddr, void *cbp) @@ -563,6 +575,21 @@ return gtp_resp(gsn, packet, len, peer, fd, seq, tid, flow, tei); }
+static int gtp_respv1c(struct gsn_t *gsn, uint16_t seq, uint32_t remote_teic, + union gtp_packet *packet, int len, + const struct in_addr *inetaddr) +{ + struct sockaddr_in peer = {}; + peer.sin_addr = *inetaddr; + peer.sin_port = htons(GTP1C_PORT); + peer.sin_family = AF_INET; + + packet->flags |= GTP1HDR_F_SEQ | GTP1HDR_F_GTP1; + packet->gtp1l.h.length = hton16(len - GTP1_HEADER_SIZE_SHORT); + + return gtp_resp(gsn, packet, len, &peer, gsn->fd1c, seq, 0, 0, remote_teic); +} + static int gtp_notification(struct gsn_t *gsn, uint8_t version, union gtp_packet *packet, int len, const struct sockaddr_in *peer, int fd, uint16_t seq)
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lynxis lazus