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authorSimon Horman <horms@verge.net.au>2014-06-04 08:53:17 +0900
committerDavid S. Miller <davem@davemloft.net>2014-06-05 15:05:09 -0700
commit3b392ddba25a95dcf5fb30b33358961c49dd5cfc (patch)
tree22e328d33b1602dd704a6db95953725f9ed6c104 /drivers/net/ethernet/davicom
parentd68de60f73391ce6d19589d94a63bb5ce9070777 (diff)
downloadlinux-3b392ddba25a95dcf5fb30b33358961c49dd5cfc.tar.bz2
MPLS: Use mpls_features to activate software MPLS GSO segmentation
If an MPLS packet requires segmentation then use mpls_features to determine if the software implementation should be used. As no driver advertises MPLS GSO segmentation this will always be the case. I had not noticed that this was necessary before as software MPLS GSO segmentation was already being used in my test environment. I believe that the reason for that is the skbs in question always had fragments and the driver I used does not advertise NETIF_F_FRAGLIST (which seems to be the case for most drivers). Thus software segmentation was activated by skb_gso_ok(). This introduces the overhead of an extra call to skb_network_protocol() in the case where where CONFIG_NET_MPLS_GSO is set and skb->ip_summed == CHECKSUM_NONE. Thanks to Jesse Gross for prompting me to investigate this. Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/davicom')
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