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authorPatrick Ohly <patrick.ohly@intel.com>2009-02-12 05:03:43 +0000
committerDavid S. Miller <davem@davemloft.net>2009-02-15 23:13:27 -0800
commit33af6bcc005a826726b48e8775df5d58112bc10b (patch)
treef56d49b32b2183e076741b590bb7ebd797d53c99 /drivers/net/igb/e1000_defines.h
parentc6cb090ba7cd88aec03718dab76e4dad56862cae (diff)
igb: use timecompare to implement hardware time stamping
Both TX and RX hardware time stamping are implemented. Due to hardware limitations it is not possible to verify reliably which packet was time stamped when multiple were pending for sending; this could be solved by only allowing one packet marked for hardware time stamping into the queue (not implemented yet). RX time stamping relies on the flag in the packet descriptor which marks packets that were time stamped. In "all packet" mode this flag is not set. TODO: also support that mode (even though it'll suffer from race conditions). Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Patrick Ohly <patrick.ohly@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/igb/e1000_defines.h')
-rw-r--r--drivers/net/igb/e1000_defines.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/igb/e1000_defines.h b/drivers/net/igb/e1000_defines.h
index 5342e231c1d..79168eeaaa0 100644
--- a/drivers/net/igb/e1000_defines.h
+++ b/drivers/net/igb/e1000_defines.h
@@ -104,6 +104,7 @@
#define E1000_RXD_STAT_UDPCS 0x10 /* UDP xsum calculated */
#define E1000_RXD_STAT_TCPCS 0x20 /* TCP xsum calculated */
#define E1000_RXD_STAT_DYNINT 0x800 /* Pkt caused INT via DYNINT */
+#define E1000_RXD_STAT_TS 0x10000 /* Pkt was time stamped */
#define E1000_RXD_ERR_CE 0x01 /* CRC Error */
#define E1000_RXD_ERR_SE 0x02 /* Symbol Error */
#define E1000_RXD_ERR_SEQ 0x04 /* Sequence Error */