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igb: make rxcsum configuration seperate from multiqueue 

The igb driver was being incorrectly setup to only allow disabling receive
checksum if multiqueue was disabled.  This change corrects that so that
RXCSUM is configured regardless of queue configuration.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2009-04-27 22:35:14 +00:00 committed by David S. Miller
parent 3935358ebc
commit 2844f79758
2 changed files with 12 additions and 20 deletions
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2
drivers/net/igb/e1000_defines.h
View File

@ -289,8 +289,8 @@
#define E1000_SCTL_DISABLE_SERDES_LOOPBACK 0x0400
/* Receive Checksum Control */
#define E1000_RXCSUM_IPOFL 0x00000100 /* IPv4 checksum offload */
#define E1000_RXCSUM_TUOFL 0x00000200 /* TCP / UDP checksum offload */
#define E1000_RXCSUM_IPPCSE 0x00001000 /* IP payload checksum enable */
#define E1000_RXCSUM_PCSD 0x00002000 /* packet checksum disabled */
/* Header split receive */

30
drivers/net/igb/igb_main.c
View File

@ -2236,29 +2236,21 @@ static void igb_configure_rx(struct igb_adapter *adapter)
mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX |
E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
wr32(E1000_MRQC, mrqc);
/* Multiqueue and raw packet checksumming are mutually
* exclusive. Note that this not the same as TCP/IP
* checksumming, which works fine. */
rxcsum = rd32(E1000_RXCSUM);
rxcsum |= E1000_RXCSUM_PCSD;
wr32(E1000_RXCSUM, rxcsum);
} else {
} else if (adapter->vfs_allocated_count) {
/* Enable multi-queue for sr-iov */
if (adapter->vfs_allocated_count)
wr32(E1000_MRQC, E1000_MRQC_ENABLE_VMDQ);
/* Enable Receive Checksum Offload for TCP and UDP */
rxcsum = rd32(E1000_RXCSUM);
if (adapter->rx_csum)
rxcsum |= E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE;
else
rxcsum &= ~(E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE);
wr32(E1000_RXCSUM, rxcsum);
wr32(E1000_MRQC, E1000_MRQC_ENABLE_VMDQ);
}
/* Enable Receive Checksum Offload for TCP and UDP */
rxcsum = rd32(E1000_RXCSUM);
/* Disable raw packet checksumming */
rxcsum |= E1000_RXCSUM_PCSD;
/* Don't need to set TUOFL or IPOFL, they default to 1 */
if (!adapter->rx_csum)
rxcsum &= ~(E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPOFL);
wr32(E1000_RXCSUM, rxcsum);
/* Set the default pool for the PF's first queue */
igb_configure_vt_default_pool(adapter);