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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