netdev - [net PATCH 0/3] Fixes for XDP/BPF

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Date:   Fri, 08 Sep 2017 14:00:05 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, john.fastabend@...il.com,
        daniel@...earbox.net, ast@...com
Subject: [net PATCH 0/3] Fixes for XDP/BPF

The following fixes, UAPI updates, and small improvement,

i. XDP needs to be called inside RCU with preempt disabled.

ii. Not strictly a bug fix but we have an attach command in the
sockmap UAPI already to avoid having a single kernel released with
only the attach and not the detach I'm pushing this into net branch.
Its early in the RC cycle so I think this is OK (not ideal but better
than supporting a UAPI with a missing detach forever).

iii. Final patch replace cpu_relax with cond_resched in devmap.

---

John Fastabend (3):
      net: rcu lock and preempt disable missing around generic xdp
      bpf: add support for sockmap detach programs
      bpf: devmap, use cond_resched instead of cpu_relax

 include/linux/bpf.h                     |    8 ++---
 kernel/bpf/devmap.c                     |    2 +
 kernel/bpf/sockmap.c                    |    2 +
 kernel/bpf/syscall.c                    |   27 ++++++++++------
 net/core/dev.c                          |   25 ++++++++++-----
 tools/testing/selftests/bpf/test_maps.c |   51 ++++++++++++++++++++++++++++++-
 6 files changed, 89 insertions(+), 26 deletions(-)

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