- 08 3月, 2013 3 次提交
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由 Laurence Evans 提交于
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
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由 Laurence Evans 提交于
There is a long-standing problem with the packet-timestamp matching in the driver. When a PTP packet is received by the MC, the FPGA timestamps the packet and the MC sends the timestamp and 6 bytes of the UUID to the driver. The driver then matches the timestamp against received packets using the same 6 bytes of UUID. The problem comes from the choice of which 6 bytes to use. The PTP spec is slightly contradictory and misleading in one of the two places where the UUIDs are discussed. From section 7.2.2.2 of the spec, a PTPD2 UUID can be either a EUI-64 or a EUI-64 constructed from a EUI-48. The typical ethernet based implementation uses a EUI-64 constructed from a EUI-48. This works by taking the first 3 bytes of the MAC address of the NIC being used for PTP (the OUI), then inserting 0xFF, 0xFE, then taking the last 3 bytes of the MAC address giving MAC[0], MAC[1], MAC[2], 0xFF, 0xFE, MAC[3], MAC[4], MAC[5] The current MC firmware and driver discard the first two bytes of this UUID and packets are matched against timestamps using bytes 2 to 7 so there is a small risk that in a deployment of Solarflare PTP NICs used with other vendors NICs, that a PTP packet could be matched against the wrong timestamp. This applies to all other organisations whose third byte of the OUI is 0x53. It's a long list but I notice that it includes Cisco. The necessary modifications to use bytes 0-2 and 5-7 of the UUID to match against are quite small but introduce incompatibility between older version of the firmware and driver. When PTP is enabled via SO_TIMESTAMPING specifying PTP V2, the driver will try to enable PTP in the firmware using the enhanced mode (above). If the firmware returns an error, the driver will enable PTP in the firmware using the old mode. [bwh: Fix some style errors; remove private ioctl bits] Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
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由 Ben Hutchings 提交于
Instead of having efx_ptp_rx() call netif_receive_skb() for an invalid PTP packet, make it return false for rejected packets and have efx_rx_deliver() pass them up. Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
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- 22 1月, 2013 1 次提交
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由 Julia Lawall 提交于
Delete successive tests to the same location. rc was previously tested and not subsequently updated. efx_phc_adjtime can return an error code, so the call is updated so that is tested instead. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @s exists@ local idexpression y; expression x,e; @@ *if ( \(x == NULL\|IS_ERR(x)\|y != 0\) ) { ... when forall return ...; } ... when != \(y = e\|y += e\|y -= e\|y |= e\|y &= e\|y++\|y--\|&y\) when != \(XT_GETPAGE(...,y)\|WMI_CMD_BUF(...)\) *if ( \(x == NULL\|IS_ERR(x)\|y != 0\) ) { ... when forall return ...; } // </smpl> Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr> Acked-by: NBen Hutchings <bhutchings@solarflare.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 08 10月, 2012 1 次提交
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由 Wei Yongjun 提交于
Using list_move() instead of list_del() + list_add(). dpatch engine is used to auto generate this patch. (https://github.com/weiyj/dpatch) Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 23 9月, 2012 1 次提交
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由 Richard Cochran 提交于
PTP Hardware Clock devices appear as class devices in sysfs. This patch changes the registration API to use the parent device, clarifying the clock's relationship to the underlying device. Signed-off-by: NRichard Cochran <richardcochran@gmail.com> Acked-by: NBen Hutchings <bhutchings@solarflare.com> Acked-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 19 9月, 2012 1 次提交
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由 Stuart Hodgson 提交于
Add PTP IEEE-1588 support and make accesible via the PHC subsystem. This work is based on prior code by Andrew Jackson Signed-off-by: NStuart Hodgson <smhodgson@solarflare.com> [bwh: - Add byte order conversion in efx_ptp_send_times() - Simplify conversion of PPS event times - Add the built-in vs module check to CONFIG_SFC_PTP dependencies] Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
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