octeontx2-pf: Fix page pool frag allocation warning
authorRatheesh Kannoth <rkannoth@marvell.com>
Tue, 10 Oct 2023 03:48:42 +0000 (09:18 +0530)
committerPaolo Abeni <pabeni@redhat.com>
Thu, 12 Oct 2023 07:48:51 +0000 (09:48 +0200)
commit50e492143374c17ad89c865a1a44837b3f5c8226
treed504d96702f272749317f689fe19f74d07cb0de3
parent354a6e707e29cb0c007176ee5b8db8be7bd2dee0
octeontx2-pf: Fix page pool frag allocation warning

Since page pool param's "order" is set to 0, will result
in below warn message if interface is configured with higher
rx buffer size.

Steps to reproduce the issue.
1. devlink dev param set pci/0002:04:00.0 name receive_buffer_size \
   value 8196 cmode runtime
2. ifconfig eth0 up

[   19.901356] ------------[ cut here ]------------
[   19.901361] WARNING: CPU: 11 PID: 12331 at net/core/page_pool.c:567 page_pool_alloc_frag+0x3c/0x230
[   19.901449] pstate: 82401009 (Nzcv daif +PAN -UAO +TCO -DIT +SSBS BTYPE=--)
[   19.901451] pc : page_pool_alloc_frag+0x3c/0x230
[   19.901453] lr : __otx2_alloc_rbuf+0x60/0xbc [rvu_nicpf]
[   19.901460] sp : ffff80000f66b970
[   19.901461] x29: ffff80000f66b970 x28: 0000000000000000 x27: 0000000000000000
[   19.901464] x26: ffff800000d15b68 x25: ffff000195b5c080 x24: ffff0002a5a32dc0
[   19.901467] x23: ffff0001063c0878 x22: 0000000000000100 x21: 0000000000000000
[   19.901469] x20: 0000000000000000 x19: ffff00016f781000 x18: 0000000000000000
[   19.901472] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[   19.901474] x14: 0000000000000000 x13: ffff0005ffdc9c80 x12: 0000000000000000
[   19.901477] x11: ffff800009119a38 x10: 4c6ef2e3ba300519 x9 : ffff800000d13844
[   19.901479] x8 : ffff0002a5a33cc8 x7 : 0000000000000030 x6 : 0000000000000030
[   19.901482] x5 : 0000000000000005 x4 : 0000000000000000 x3 : 0000000000000a20
[   19.901484] x2 : 0000000000001080 x1 : ffff80000f66b9d4 x0 : 0000000000001000
[   19.901487] Call trace:
[   19.901488]  page_pool_alloc_frag+0x3c/0x230
[   19.901490]  __otx2_alloc_rbuf+0x60/0xbc [rvu_nicpf]
[   19.901494]  otx2_rq_aura_pool_init+0x1c4/0x240 [rvu_nicpf]
[   19.901498]  otx2_open+0x228/0xa70 [rvu_nicpf]
[   19.901501]  otx2vf_open+0x20/0xd0 [rvu_nicvf]
[   19.901504]  __dev_open+0x114/0x1d0
[   19.901507]  __dev_change_flags+0x194/0x210
[   19.901510]  dev_change_flags+0x2c/0x70
[   19.901512]  devinet_ioctl+0x3a4/0x6c4
[   19.901515]  inet_ioctl+0x228/0x240
[   19.901518]  sock_ioctl+0x2ac/0x480
[   19.901522]  __arm64_sys_ioctl+0x564/0xe50
[   19.901525]  invoke_syscall.constprop.0+0x58/0xf0
[   19.901529]  do_el0_svc+0x58/0x150
[   19.901531]  el0_svc+0x30/0x140
[   19.901533]  el0t_64_sync_handler+0xe8/0x114
[   19.901535]  el0t_64_sync+0x1a0/0x1a4
[   19.901537] ---[ end trace 678c0bf660ad8116 ]---

Fixes: b2e3406a38f0 ("octeontx2-pf: Add support for page pool")
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Link: https://lore.kernel.org/r/20231010034842.3807816-1-rkannoth@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c