[PATCH rfc v3 0/4] add frag page support in page pool
flat view
STALE1936d
SUPERSEDED
From: Yunsheng Lin <hidden>
Date: 2021-07-12 12:17:47
Also in:
bpf, lkml
Subsystem:
hisilicon network subsystem 3 driver (hns3), hisilicon network subsystem driver, marvell mvneta ethernet driver, marvell mvpp2 ethernet driver, networking drivers, networking [general], page pool, the rest, ti ethernet switch driver (cpsw) · Maintainers:
Jian Shen, Jijie Shao, Marcin Wojtas, Russell King, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Jesper Dangaard Brouer, Ilias Apalodimas, Linus Torvalds
Status: Superseded by v6 (posted 2021-07-20). [go to v6]
Revision v3 (6 revisions archived).
Revisions (6)
- v3 current re-posted current
- v4 [diff against previous]
- v5 [diff against previous]
- v6 [diff against previous]
- v1 [diff against previous]
- v2 [diff against previous]
This patchset adds frag page support in page pool and
enable skb's page frag recycling based on page pool in
hns3 drvier.
RFC v3:
1. Implement the semantic of "page recycling only wait for the
page pool user instead of all user of a page"
2. Support the frag allocation of different sizes
3. Merge patch 4 & 5 to one patch as it does not make sense to
use page_pool_dev_alloc_pages() API directly with elevated
refcnt.
4. other minor comment suggested by Alexander.
RFC v2:
1. Split patch 1 to more reviewable one.
2. Repurpose the lower 12 bits of the dma address to store the
pagecnt_bias as suggested by Alexander.
3. support recycling to pool->alloc for elevated refcnt case
too.
Yunsheng Lin (4):
page_pool: keep pp info as long as page pool owns the page
page_pool: add interface for getting and setting pagecnt_bias
page_pool: add frag page recycling support in page pool
net: hns3: support skb's frag page recycling based on page pool
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 79 +++++++++++-
drivers/net/ethernet/hisilicon/hns3/hns3_enet.h | 3 +
drivers/net/ethernet/marvell/mvneta.c | 6 +-
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +-
drivers/net/ethernet/ti/cpsw.c | 2 +-
drivers/net/ethernet/ti/cpsw_new.c | 2 +-
include/linux/skbuff.h | 4 +-
include/net/page_pool.h | 58 +++++++--
net/core/page_pool.c | 155 +++++++++++++++++++++---
9 files changed, 267 insertions(+), 44 deletions(-)
--
2.7.4