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authorJay Vosburgh <fubar@us.ibm.com>2007-12-06 23:40:34 -0800
committerJeff Garzik <jeff@garzik.org>2007-12-07 15:00:32 -0500
commit6f6652be183c8c7cb99c646dd7494ab45e4833ba (patch)
tree8ab3acaa0f7887aad46d0a1dd10f800312d657fa /include/linux/if_bonding.h
parentb63bb739a1d24f395c09f88ff43c54c736a60453 (diff)
bonding: Add new layer2+3 hash for xor/802.3ad modes
Add new hash for balance-xor and 802.3ad modes. Originally submitted by "Glenn Griffin" <ggriffin.kernel@gmail.com>; modified by Jay Vosburgh to move setting of hash policy out of line, tweak the documentation update and add version update to 3.2.2. Glenn's original comment follows: Included is a patch for a new xmit_hash_policy for the bonding driver that selects slaves based on MAC and IP information. This is a middle ground between what currently exists in the layer2 only policy and the layer3+4 policy. This policy strives to be fully 802.3ad compliant by transmitting every packet of any particular flow over the same link. As documented the layer3+4 policy is not fully compliant for extreme cases such as ip fragmentation, so this policy is a nice compromise for environments that require full compliance but desire more than the layer2 only policy. Signed-off-by: "Glenn Griffin" <ggriffin.kernel@gmail.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'include/linux/if_bonding.h')
-rw-r--r--include/linux/if_bonding.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/if_bonding.h b/include/linux/if_bonding.h
index 84598fa2e9d..65c2d247068 100644
--- a/include/linux/if_bonding.h
+++ b/include/linux/if_bonding.h
@@ -85,7 +85,8 @@
/* hashing types */
#define BOND_XMIT_POLICY_LAYER2 0 /* layer 2 (MAC only), default */
-#define BOND_XMIT_POLICY_LAYER34 1 /* layer 3+4 (IP ^ MAC) */
+#define BOND_XMIT_POLICY_LAYER34 1 /* layer 3+4 (IP ^ (TCP || UDP)) */
+#define BOND_XMIT_POLICY_LAYER23 2 /* layer 2+3 (IP ^ MAC) */
typedef struct ifbond {
__s32 bond_mode;