[PATCH 2/3] gtp: Make gtp_update_pdp_conf() work for gtp0 and gtp1 connections

From: Daniel Willmann <dwillmann(a)sysmocom.de> pdp_getgtp1(&pdp, get_tei(pack)) works like pdp_getgtp0 for gtp0 connections. Using get_hlen() for gtpie_decaps is used in other places to decode ies for both version 0 and 1. --- gtp/gtp.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) diff --git a/gtp/gtp.c b/gtp/gtp.c index 7cc2328..772ab08 100644 --- a/gtp/gtp.c +++ b/gtp/gtp.c @@ -2175,33 +2175,27 @@ int gtp_update_pdp_conf(struct gsn_t *gsn, int version, uint8_t cause, recovery; void *cbp = NULL; uint8_t type = 0; + int hlen = get_hlen(pack); /* Remove packet from queue */ if (gtp_conf(gsn, 0, peer, pack, len, &type, &cbp)) return EOF; - /* TODO This function is called from gtp_decaps1c() (for GTP v1) but - * uses gtp0.h.flow (GTP v0 data element) - */ /* Find the context in question */ - if (pdp_getgtp0(&pdp, ntoh16(((union gtp_packet *)pack)->gtp0.h.flow))) { + if (pdp_getgtp1(&pdp, get_tei(pack))) { gsn->err_unknownpdp++; GTP_LOGPKG(LOGL_ERROR, peer, pack, len, - "Unknown PDP context\n"); + "Unknown PDP context: %u\n", get_tei(pack)); if (gsn->cb_conf) - gsn->cb_conf(type, cause, NULL, cbp); + gsn->cb_conf(type, EOF, NULL, cbp); return EOF; } /* Register that we have received a valid teic from GGSN */ pdp->teic_confirmed = 1; - /* TODO This function is called from gtp_decaps1c() (for GTP v1) but - * explicitly passes version 0 and GTP0_HEADER_SIZE to gtpie_decaps() - */ /* Decode information elements */ - if (gtpie_decaps - (ie, 0, pack + GTP0_HEADER_SIZE, len - GTP0_HEADER_SIZE)) { + if (gtpie_decaps(ie, version, pack + hlen, len - hlen)) { gsn->invalid++; GTP_LOGPKG(LOGL_ERROR, peer, pack, len, "Invalid message format\n"); -- 2.1.4