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unix: add J1939 protocol support on socketcan interface

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Fixes golang/go#42797

Change-Id: Ia7be73e53438dec80903c95de0e6829005741a0f
GitHub-Last-Rev: bc3583533928d549ea6bedd4dae13e0643da2a44
GitHub-Pull-Request: golang/sys#91
Reviewed-on: https://go-review.googlesource.com/c/sys/+/272767
Run-TryBot: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
This commit is contained in:
Sauci
2020-11-26 14:47:05 +00:00
committed by Matt Layher
parent f84b799fce
commit a4b67b81d3
2 changed files with 95 additions and 15 deletions
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unix/syscall_internal_linux_test.go
+30 -3
View File
@@ -169,7 +169,7 @@ func Test_anyToSockaddr(t *testing.T) {
},
},
{
name: "AF_CAN",
name: "AF_CAN CAN_RAW",
rsa: sockaddrCANToAny(RawSockaddrCAN{
Family: AF_CAN,
Ifindex: 12345678,
@@ -185,6 +185,27 @@ func Test_anyToSockaddr(t *testing.T) {
RxID: 0xAAAAAAAA,
TxID: 0xBBBBBBBB,
},
skt: SocketSpec{domain: AF_CAN, typ: SOCK_RAW, protocol: CAN_RAW},
},
{
name: "AF_CAN CAN_J1939",
rsa: sockaddrCANToAny(RawSockaddrCAN{
Family: AF_CAN,
Ifindex: 12345678,
Addr: [16]byte{
0xAA, 0xAA, 0xAA, 0xAA,
0xAA, 0xAA, 0xAA, 0xAA,
0xBB, 0xBB, 0xBB, 0xBB,
0xCC, 0x00, 0x00, 0x00,
},
}),
sa: &SockaddrCANJ1939{
Ifindex: 12345678,
Name: 0xAAAAAAAAAAAAAAAA,
PGN: 0xBBBBBBBB,
Addr: 0xCC,
},
skt: SocketSpec{domain: AF_CAN, typ: SOCK_DGRAM, protocol: CAN_J1939},
},
{
name: "AF_MAX EAFNOSUPPORT",
@@ -205,10 +226,16 @@ func Test_anyToSockaddr(t *testing.T) {
if tt.skt.domain != 0 {
fd, err = Socket(tt.skt.domain, tt.skt.typ, tt.skt.protocol)
// Some sockaddr types need specific kernel modules running: if these
// are not present we'll get EPROTONOSUPPORT back when trying to create
// the socket. Skip the test in this situation.
// are not present we'll get EPROTONOSUPPORT/EAFNOSUPPORT back when
// trying to create the socket. Skip the test in this situation.
if err == EPROTONOSUPPORT {
t.Skip("socket family/protocol not supported by kernel")
} else if err == EAFNOSUPPORT {
t.Skip("socket address family not supported by kernel")
} else if err == EACCES {
// Some platforms might require elevated privileges to perform
// actions on sockets. Skip the test in this situation.
t.Skip("socket operation not permitted")
} else if err != nil {
t.Fatalf("socket(%v): %v", tt.skt, err)
}