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linux/drivers/net
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Dimitri Daskalakis ec7067e661 eth: fbnic: Increase FBNIC_QUEUE_SIZE_MIN to 64 
On systems with 64K pages, RX queues will be wedged if users set the
descriptor count to the current minimum (16). Fbnic fragments large
pages into 4K chunks, and scales down the ring size accordingly. With
64K pages and 16 descriptors, the ring size mask is 0 and will never
be filled.

32 descriptors is another special case that wedges the RX rings.
Internally, the rings track pages for the head/tail pointers, not page
fragments. So with 32 descriptors, there's only 1 usable page as one
ring slot is kept empty to disambiguate between an empty/full ring.
As a result, the head pointer never advances and the HW stalls after
consuming 16 page fragments.

Fixes: 0cb4c0a137 ("eth: fbnic: Implement Rx queue alloc/start/stop/free")
Signed-off-by: Dimitri Daskalakis <daskald@meta.com>
Link: https://patch.msgid.link/20260401162848.2335350-1-dimitri.daskalakis1@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 		2026-04-02 08:38:34 -07:00
..
arcnet Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
bonding net: bonding: fix use-after-free in bond_xmit_broadcast() 2026-03-31 10:49:25 +02:00
caif serial: caif: hold tty->link reference in ldisc_open and ser_release 2026-03-09 18:47:55 -07:00
can can: mcp251x: add error handling for power enable in open and resume 2026-03-19 14:25:04 +01:00
dsa net: dsa: bcm_sf2: fix missing clk_disable_unprepare() in error paths 2026-03-19 09:26:40 -07:00
ethernet eth: fbnic: Increase FBNIC_QUEUE_SIZE_MIN to 64 2026-04-02 08:38:34 -07:00
fddi
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fjes Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
hamradio Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
hyperv Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
ieee802154 Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
ipa Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
ipvlan Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
mctp mctp: i2c: fix skb memory leak in receive path 2026-03-10 11:10:55 +01:00
mdio net: mdio: rtl9300: use scoped for loops 2025-12-28 08:55:48 +01:00
netdevsim netdevsim: drop PSP ext ref on forward failure 2026-03-18 17:13:34 -07:00
ovpn Including fixes from IPsec, Bluetooth and netfilter 2026-02-26 08:00:13 -08:00
pcs Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
phy net: sfp: Fix Ubiquiti U-Fiber Instant SFP module on mvneta 2026-03-27 20:55:52 -07:00
plip
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ppp Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
pse-pd Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
slip Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
team team: fix header_ops type confusion with non-Ethernet ports 2026-03-24 11:26:32 +01:00
thunderbolt net: thunderbolt: Allow reading link settings 2026-01-19 12:09:58 -08:00
usb net: usb: aqc111: Do not perform PM inside suspend callback 2026-03-17 13:36:12 +01:00
vmxnet3
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vxlan vxlan: validate ND option lengths in vxlan_na_create 2026-03-27 20:37:14 -07:00
wan Including fixes from IPsec, Bluetooth and netfilter 2026-02-26 08:00:13 -08:00
wireguard Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
wireless wifi: virt_wifi: remove SET_NETDEV_DEV to avoid use-after-free 2026-03-25 20:46:57 +01:00
wwan Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
xen-netback Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
Kconfig printk: add CONFIG_PRINTK dependency for netconsole 2026-02-17 13:04:20 +01:00
LICENSE.SRC
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Makefile net: remove HIPPI support and RoadRunner HIPPI driver 2026-01-20 19:12:06 -08:00
Space.c
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amt.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
bareudp.c
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dummy.c
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eql.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
geneve.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
gtp.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
ifb.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
loopback.c
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macsec.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
macvlan.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
macvtap.c
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mdio.c
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mhi_net.c
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mii.c
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net_failover.c net: remove unnecessary module_init/exit functions 2026-02-02 17:25:23 -08:00
netconsole.c netconsole: fix sysdata_release_enabled_show checking wrong flag 2026-03-03 17:23:50 -08:00
netkit.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
nlmon.c
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ntb_netdev.c
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pfcp.c
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rionet.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
sungem_phy.c
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tap.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
tun.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
tun_vnet.h virtio-net: correct hdr_len handling for VIRTIO_NET_F_GUEST_HDRLEN 2026-03-24 11:12:07 +01:00
veth.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
virtio_net.c virtio_net: clamp rss_max_key_size to NETDEV_RSS_KEY_LEN 2026-04-01 19:47:44 -07:00
vrf.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
vsockmon.c
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xen-netfront.c xen: branch for v7.0-rc3 2026-03-07 07:44:32 -08:00