| 13 | ) |
| 14 | |
| 15 | func errShouldDisableUDPGSO(err error) bool { |
| 16 | var serr *os.SyscallError |
| 17 | if errors.As(err, &serr) { |
| 18 | // EIO is returned by udp_send_skb() if the device driver does not have |
| 19 | // tx checksumming enabled, which is a hard requirement of UDP_SEGMENT. |
| 20 | // See: |
| 21 | // https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/man7/udp.7?id=806eabd74910447f21005160e90957bde4db0183#n228 |
| 22 | // https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/net/ipv4/udp.c?h=v6.2&id=c9c3395d5e3dcc6daee66c6908354d47bf98cb0c#n942 |
| 23 | return serr.Err == unix.EIO |
| 24 | } |
| 25 | return false |
| 26 | } |