From d5e0f77bd63bc767856e1922b24556ef1b123b55 Mon Sep 17 00:00:00 2001 From: Jared Rossi Date: Sat, 19 Oct 2024 21:29:45 -0400 Subject: [PATCH 13/38] pc-bios/s390-ccw: Remove panics from Netboot IPL path MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RH-Author: Thomas Huth RH-MergeRequest: 278: Full boot order support for s390x [Centos 10] RH-Jira: RHEL-58153 RH-Acked-by: Cédric Le Goater RH-Acked-by: Miroslav Rezanina RH-Commit: [12/23] 26920462eca8a2e6d443c811efa69023fbe4f31f (thuth/qemu-kvm-cs9) Remove panic-on-error from Netboot specific functions so that error recovery may be possible in the future. Functions that would previously panic now provide a return code. Signed-off-by: Jared Rossi Reviewed-by: Thomas Huth Message-ID: <20241020012953.1380075-12-jrossi@linux.ibm.com> Signed-off-by: Thomas Huth (cherry picked from commit f1a2a6e41ef76e02ddc5ede3dd042ef96b4fb8d2) --- pc-bios/s390-ccw/bootmap.c | 1 + pc-bios/s390-ccw/netmain.c | 17 +++++++++++------ pc-bios/s390-ccw/s390-ccw.h | 2 +- pc-bios/s390-ccw/virtio-net.c | 7 +++++-- 4 files changed, 18 insertions(+), 9 deletions(-) diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c index 652807a16a..95ef9104d0 100644 --- a/pc-bios/s390-ccw/bootmap.c +++ b/pc-bios/s390-ccw/bootmap.c @@ -1072,6 +1072,7 @@ void zipl_load(void) if (virtio_get_device_type() == VIRTIO_ID_NET) { netmain(); + panic("\n! Cannot IPL from this network !\n"); } if (ipl_scsi()) { diff --git a/pc-bios/s390-ccw/netmain.c b/pc-bios/s390-ccw/netmain.c index bc6ad8695f..d1a6c9a91c 100644 --- a/pc-bios/s390-ccw/netmain.c +++ b/pc-bios/s390-ccw/netmain.c @@ -464,7 +464,7 @@ static bool find_net_dev(Schib *schib, int dev_no) return false; } -static void virtio_setup(void) +static bool virtio_setup(void) { Schib schib; int ssid; @@ -495,10 +495,10 @@ static void virtio_setup(void) } } - IPL_assert(found, "No virtio net device found"); + return found; } -void netmain(void) +int netmain(void) { filename_ip_t fn_ip; int rc, fnlen; @@ -506,11 +506,15 @@ void netmain(void) sclp_setup(); puts("Network boot starting..."); - virtio_setup(); + if (!virtio_setup()) { + puts("No virtio net device found."); + return -1; + } rc = net_init(&fn_ip); if (rc) { - panic("Network initialization failed. Halting."); + puts("Network initialization failed."); + return -1; } fnlen = strlen(fn_ip.filename); @@ -528,5 +532,6 @@ void netmain(void) jump_to_low_kernel(); } - panic("Failed to load OS from network."); + puts("Failed to load OS from network."); + return -1; } diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h index 3e844abd71..344ad15655 100644 --- a/pc-bios/s390-ccw/s390-ccw.h +++ b/pc-bios/s390-ccw/s390-ccw.h @@ -57,7 +57,7 @@ unsigned int get_loadparm_index(void); void main(void); /* netmain.c */ -void netmain(void); +int netmain(void); /* sclp.c */ void sclp_print(const char *string); diff --git a/pc-bios/s390-ccw/virtio-net.c b/pc-bios/s390-ccw/virtio-net.c index 2fcb0a58c5..f9854a22c3 100644 --- a/pc-bios/s390-ccw/virtio-net.c +++ b/pc-bios/s390-ccw/virtio-net.c @@ -54,8 +54,11 @@ int virtio_net_init(void *mac_addr) vdev->guest_features[0] = VIRTIO_NET_F_MAC_BIT; virtio_setup_ccw(vdev); - IPL_assert(vdev->guest_features[0] & VIRTIO_NET_F_MAC_BIT, - "virtio-net device does not support the MAC address feature"); + if (!(vdev->guest_features[0] & VIRTIO_NET_F_MAC_BIT)) { + puts("virtio-net device does not support the MAC address feature"); + return -1; + } + memcpy(mac_addr, vdev->config.net.mac, ETH_ALEN); for (i = 0; i < 64; i++) { -- 2.39.3