tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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[PATCH] ixgb: Do not set the RS bit on context descriptors

Don't set the RS bit on context descriptors, causes un-necessary bus activity

Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>

diff -up net-drivers-2.6/drivers/net/ixgb/ixgb_main.c net-drivers-2.6/drivers/net/ixgb.new/ixgb_main.c

authored by Malli Chilakala and committed by Jeff Garzik 06c2f9ec 5633684d

+2 -3
unified split
+2 -3
drivers/net/ixgb/ixgb_main.c
··· 1209 1209 | IXGB_CONTEXT_DESC_CMD_TSE 1210 1210 | IXGB_CONTEXT_DESC_CMD_IP 1211 1211 | IXGB_CONTEXT_DESC_CMD_TCP 1212 - | IXGB_CONTEXT_DESC_CMD_RS 1213 1212 | IXGB_CONTEXT_DESC_CMD_IDE 1214 1213 | (skb->len - (hdr_len))); 1214 + 1215 1215 1216 1216 if(++i == adapter->tx_ring.count) i = 0; 1217 1217 adapter->tx_ring.next_to_use = i; ··· 1247 1247 context_desc->mss = 0; 1248 1248 context_desc->cmd_type_len = 1249 1249 cpu_to_le32(IXGB_CONTEXT_DESC_TYPE 1250 - | IXGB_TX_DESC_CMD_RS 1251 - | IXGB_TX_DESC_CMD_IDE); 1250 + | IXGB_TX_DESC_CMD_IDE); 1252 1251 1253 1252 if(++i == adapter->tx_ring.count) i = 0; 1254 1253 adapter->tx_ring.next_to_use = i;