igb: remove unneeded bit refrence when enabling jumbo frames
There is a reference to a Buffer Size extention bit that is unneded by
82575/82576 hardware. Since it is not needed it should be removed from the
code.
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>
diff --git a/drivers/net/igb/e1000_defines.h b/drivers/net/igb/e1000_defines.h
index ce70068..c5fe784 100644
--- a/drivers/net/igb/e1000_defines.h
+++ b/drivers/net/igb/e1000_defines.h
@@ -168,18 +168,12 @@
#define E1000_RCTL_RDMTS_HALF 0x00000000 /* rx desc min threshold size */
#define E1000_RCTL_MO_SHIFT 12 /* multicast offset shift */
#define E1000_RCTL_BAM 0x00008000 /* broadcast enable */
-/* these buffer sizes are valid if E1000_RCTL_BSEX is 0 */
#define E1000_RCTL_SZ_2048 0x00000000 /* rx buffer size 2048 */
#define E1000_RCTL_SZ_1024 0x00010000 /* rx buffer size 1024 */
#define E1000_RCTL_SZ_512 0x00020000 /* rx buffer size 512 */
#define E1000_RCTL_SZ_256 0x00030000 /* rx buffer size 256 */
-/* these buffer sizes are valid if E1000_RCTL_BSEX is 1 */
-#define E1000_RCTL_SZ_16384 0x00010000 /* rx buffer size 16384 */
-#define E1000_RCTL_SZ_8192 0x00020000 /* rx buffer size 8192 */
-#define E1000_RCTL_SZ_4096 0x00030000 /* rx buffer size 4096 */
#define E1000_RCTL_VFE 0x00040000 /* vlan filter enable */
#define E1000_RCTL_CFIEN 0x00080000 /* canonical form enable */
-#define E1000_RCTL_BSEX 0x02000000 /* Buffer size extension */
#define E1000_RCTL_SECRC 0x04000000 /* Strip Ethernet CRC */
/*
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index b64c41a..ae65fae 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -1791,37 +1791,29 @@
*/
rctl |= E1000_RCTL_SECRC;
- rctl &= ~E1000_RCTL_SBP;
+ /*
+ * disable store bad packets, long packet enable, and clear size bits.
+ */
+ rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_LPE | E1000_RCTL_SZ_256);
- if (adapter->netdev->mtu <= ETH_DATA_LEN)
- rctl &= ~E1000_RCTL_LPE;
- else
- rctl |= E1000_RCTL_LPE;
- if (adapter->rx_buffer_len <= IGB_RXBUFFER_2048) {
+ if (adapter->netdev->mtu <= ETH_DATA_LEN) {
/* Setup buffer sizes */
- rctl &= ~E1000_RCTL_SZ_4096;
- rctl |= E1000_RCTL_BSEX;
switch (adapter->rx_buffer_len) {
case IGB_RXBUFFER_256:
rctl |= E1000_RCTL_SZ_256;
- rctl &= ~E1000_RCTL_BSEX;
break;
case IGB_RXBUFFER_512:
rctl |= E1000_RCTL_SZ_512;
- rctl &= ~E1000_RCTL_BSEX;
break;
case IGB_RXBUFFER_1024:
rctl |= E1000_RCTL_SZ_1024;
- rctl &= ~E1000_RCTL_BSEX;
break;
- case IGB_RXBUFFER_2048:
default:
rctl |= E1000_RCTL_SZ_2048;
- rctl &= ~E1000_RCTL_BSEX;
break;
}
} else {
- rctl &= ~E1000_RCTL_BSEX;
+ rctl |= E1000_RCTL_LPE;
srrctl = adapter->rx_buffer_len >> E1000_SRRCTL_BSIZEPKT_SHIFT;
}