diff mbox series

[bpf,v10,03/14] bpf: sockmap, reschedule is now done through backlog

Message ID 20230523025618.113937-4-john.fastabend@gmail.com (mailing list archive)
State Accepted
Delegated to: BPF
Headers show
Series bpf sockmap fixes | expand

Checks

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bpf/vmtest-bpf-VM_Test-5 success Logs for build for x86_64 with llvm-16
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bpf/vmtest-bpf-VM_Test-3 success Logs for build for s390x with gcc
bpf/vmtest-bpf-VM_Test-7 success Logs for test_maps on aarch64 with gcc
bpf/vmtest-bpf-VM_Test-9 success Logs for test_maps on x86_64 with gcc
bpf/vmtest-bpf-VM_Test-10 success Logs for test_maps on x86_64 with llvm-16
bpf/vmtest-bpf-VM_Test-19 success Logs for test_progs_no_alu32_parallel on aarch64 with gcc
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bpf/vmtest-bpf-VM_Test-15 success Logs for test_progs_no_alu32 on aarch64 with gcc
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bpf/vmtest-bpf-VM_Test-18 success Logs for test_progs_no_alu32 on x86_64 with llvm-16
bpf/vmtest-bpf-VM_Test-16 success Logs for test_progs_no_alu32 on s390x with gcc
bpf/vmtest-bpf-VM_Test-12 success Logs for test_progs on s390x with gcc
bpf/vmtest-bpf-VM_Test-8 success Logs for test_maps on s390x with gcc
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for bpf, async
netdev/fixes_present success Fixes tag present in non-next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 10 this patch: 10
netdev/cc_maintainers fail 1 blamed authors not CCed: liujian56@huawei.com; 4 maintainers not CCed: kuba@kernel.org davem@davemloft.net pabeni@redhat.com liujian56@huawei.com
netdev/build_clang success Errors and warnings before: 8 this patch: 8
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 10 this patch: 10
netdev/checkpatch warning WARNING: Please use correct Fixes: style 'Fixes: <12 chars of sha1> ("<title line>")' - ie: 'Fixes: bec217197b41 ("skmsg: Schedule psock work if the cached skb exists on the psock")'
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
bpf/vmtest-bpf-PR success PR summary

Commit Message

John Fastabend May 23, 2023, 2:56 a.m. UTC 
Now that the backlog manages the reschedule() logic correctly we can drop
the partial fix to reschedule from recvmsg hook.

Rescheduling on recvmsg hook was added to address a corner case where we
still had data in the backlog state but had nothing to kick it and
reschedule the backlog worker to run and finish copying data out of the
state. This had a couple limitations, first it required user space to
kick it introducing an unnecessary EBUSY and retry. Second it only
handled the ingress case and egress redirects would still be hung.

With the correct fix, pushing the reschedule logic down to where the
enomem error occurs we can drop this fix.

Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Fixes: bec217197b412 ("skmsg: Schedule psock work if the cached skb exists on the psock")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
---
 net/core/skmsg.c | 2 --
 1 file changed, 2 deletions(-)
diff mbox series

Patch

diff --git a/net/core/skmsg.c b/net/core/skmsg.c
index 0a9ee2acac0b..76ff15f8bb06 100644
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@ -481,8 +481,6 @@  int sk_msg_recvmsg(struct sock *sk, struct sk_psock *psock, struct msghdr *msg,
 		msg_rx = sk_psock_peek_msg(psock);
 	}
 out:
-	if (psock->work_state.skb && copied > 0)
-		schedule_delayed_work(&psock->work, 0);
 	return copied;
 }
 EXPORT_SYMBOL_GPL(sk_msg_recvmsg);