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qmi, imsd-pcscf: read the ims PDN's P-CSCF list from the modem's runtime settings

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The network hands the P-CSCF addresses to the modem in the PDN's Protocol
Configuration Options; ModemManager's bearer code does not ask the modem
for them, qmicli (libqmi 1.39) prints none of them, and libqmi has no TLV
for the IPv6 list (0x2E), which is why PCSCF= was a required setting. A
second QMI WDS client reads them once it is bound to the bearer's mux
data port (the binding ModemManager gives its own clients): Bind Mux
Data Port, Set IP Family 6, Get Current Settings, over one AF_QIPCRTR
socket. Imsd:Qmi holds the bytes and the readers (0x22 the flag, 0x23
IPv4, 0x24 FQDN, 0x2E IPv6 in Qualcomm's layout: a count, then 16 bytes
each); imsd-pcscf is the socket, the service lookup and the sequence, and
prints the list, one address per line; nothing runs it yet. It sends
no Start Network and no Stop Network; the bearer stayed connected and the
registration stood after its runs (the fp6 journal's probe capture 04,
benches 38 and 39). The
build, the CI cross-compile, the tarball and the apk gain the product;
linux-headers is named in the sysroot for <linux/qrtr.h>.

Tested: crafter-build test, 8 passed; the aarch64 build of this commit's
helper on the dev phone (KPN) against the live ims bearer.
This commit is contained in:
Jorijn van der Graaf 2026-10-11 16:07:28 +02:00
commit a89ca5a60c
Signed by: jorijnvdgraaf
GPG key ID: 2937E59CDCC1BCFB
10 changed files with 701 additions and 25 deletions
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3
packaging/make-bin-tarball.sh
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@ -12,10 +12,12 @@ BIN=$(ls -t bin/imsd-aarch64-*/imsd 2>/dev/null | head -n1)
MEDIA=$(ls -t bin/imsd-media-aarch64-*/imsd-media 2>/dev/null | head -n1)
DIALERD=$(ls -t bin/imsd-dialerd-aarch64-*/imsd-dialerd 2>/dev/null | head -n1)
OFONOD=$(ls -t bin/imsd-ofonod-aarch64-*/imsd-ofonod 2>/dev/null | head -n1)
PCSCF=$(ls -t bin/imsd-pcscf-aarch64-*/imsd-pcscf 2>/dev/null | head -n1)
[ -n "$BIN" ] || { echo "no aarch64 imsd build found — cross-compile first" >&2; exit 1; }
[ -n "$MEDIA" ] || { echo "no aarch64 imsd-media build — cross-compile with --product=media" >&2; exit 1; }
[ -n "$DIALERD" ] || { echo "no aarch64 imsd-dialerd build — cross-compile with --product=dialerd" >&2; exit 1; }
[ -n "$OFONOD" ] || { echo "no aarch64 imsd-ofonod build — cross-compile with --product=ofonod" >&2; exit 1; }
[ -n "$PCSCF" ] || { echo "no aarch64 imsd-pcscf build — cross-compile with --product=pcscf" >&2; exit 1; }
stage=$(mktemp -d)
trap 'rm -rf "$stage"' EXIT
@ -24,6 +26,7 @@ cp "$BIN" "$stage/imsd-$VER/imsd"
cp "$MEDIA" "$stage/imsd-$VER/imsd-media"
cp "$DIALERD" "$stage/imsd-$VER/imsd-dialerd"
cp "$OFONOD" "$stage/imsd-$VER/imsd-ofonod"
cp "$PCSCF" "$stage/imsd-$VER/imsd-pcscf"
cp packaging/ims-pdn-up.sh packaging/imsd-handover.sh packaging/imsd.service \
packaging/imsd-dialerd.desktop packaging/imsd-ofonod.service \
packaging/imsd-ofono-restart-calls.sh \