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-rw-r--r--drivers/net/igb/igb_main.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 9cb04e29ad13..94656179441d 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -2717,14 +2717,16 @@ static void igb_setup_mrqc(struct igb_adapter *adapter)
}
igb_vmm_control(adapter);
- mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 |
- E1000_MRQC_RSS_FIELD_IPV4_TCP);
- mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 |
- E1000_MRQC_RSS_FIELD_IPV6_TCP);
- mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP |
- E1000_MRQC_RSS_FIELD_IPV6_UDP);
- mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX |
- E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
+ /*
+ * Generate RSS hash based on TCP port numbers and/or
+ * IPv4/v6 src and dst addresses since UDP cannot be
+ * hashed reliably due to IP fragmentation
+ */
+ mrqc |= E1000_MRQC_RSS_FIELD_IPV4 |
+ E1000_MRQC_RSS_FIELD_IPV4_TCP |
+ E1000_MRQC_RSS_FIELD_IPV6 |
+ E1000_MRQC_RSS_FIELD_IPV6_TCP |
+ E1000_MRQC_RSS_FIELD_IPV6_TCP_EX;
wr32(E1000_MRQC, mrqc);
}
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