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disable GSO if sending fails for a particular remote address

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This commit is contained in:
Marten Seemann 2023-07-29 15:58:32 -07:00
parent 83c00a574d
commit 4122eb7a7d
15 changed files with 318 additions and 150 deletions
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20
sys_conn_helper_linux_test.go
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@ -1,22 +1,24 @@
// We need root permissions to use RCVBUFFORCE.
// This test is therefore only compiled when the root build flag is set.
// It can only succeed if the tests are then also run with root permissions.
//go:build linux && root
//go:build linux
package quic
import (
"errors"
"net"
"os"
"golang.org/x/sys/unix"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
)
var errGSO = &os.SyscallError{Err: unix.EIO}
var _ = Describe("forcing a change of send and receive buffer sizes", func() {
It("forces a change of the receive buffer size", func() {
if os.Getuid() != 0 {
Fail("Must be root to force change the receive buffer size")
Skip("Must be root to force change the receive buffer size")
}
c, err := net.ListenPacket("udp", "127.0.0.1:0")
@ -43,7 +45,7 @@ var _ = Describe("forcing a change of send and receive buffer sizes", func() {
It("forces a change of the send buffer size", func() {
if os.Getuid() != 0 {
Fail("Must be root to force change the send buffer size")
Skip("Must be root to force change the send buffer size")
}
c, err := net.ListenPacket("udp", "127.0.0.1:0")
@ -67,4 +69,10 @@ var _ = Describe("forcing a change of send and receive buffer sizes", func() {
// The kernel doubles this value (to allow space for bookkeeping overhead)
Expect(size).To(Equal(2 * large))
})
It("detects GSO errors", func() {
Expect(isGSOError(errGSO)).To(BeTrue())
Expect(isGSOError(nil)).To(BeFalse())
Expect(isGSOError(errors.New("test"))).To(BeFalse())
})
})