[bpf,0/5] sockmap fixes

Message

John Fastabend Nov. 7, 2020, 7:37 p.m. UTC

This includes fixes for sockmap found after I started running skmsg and
verdict programs on systems that I use daily. To date with attached
series I've been running for multiple weeks without seeing any issues
on systems doing calls, mail, movies, etc.

Also I started running packetdrill and after this series last remaining
fix needed is to handle MSG_EOR correctly. This will come as a follow
up to this, but because we use sendpage to pass pages into TCP stack
we need to enable TCP side some.

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John Fastabend (5):
      bpf, sockmap: fix partial copy_page_to_iter so progress can still be made
      bpf, sockmap: Ensure SO_RCVBUF memory is observed on ingress redirect
      bpf, sockmap: Avoid returning unneeded EAGAIN when redirecting to self
      bpf, sockmap: Handle memory acct if skb_verdict prog redirects to self
      bpf, sockmap: Avoid failures from skb_to_sgvec when skb has frag_list


 net/core/skmsg.c   | 84 +++++++++++++++++++++++++++++++++++++++-------
 net/ipv4/tcp_bpf.c |  3 +-
 2 files changed, 73 insertions(+), 14 deletions(-)

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