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authorDavid S. Miller <davem@davemloft.net>2014-10-01 21:35:58 -0400
committerDavid S. Miller <davem@davemloft.net>2014-10-01 21:35:58 -0400
commit25e379c475121c658a344cfd5eeed9affe272d31 (patch)
treeaacc22b440766d6bdbda7b035962a7dcc590263c /net/bridge/br_stp_timer.c
parentMerge branch 'bpf-next' (diff)
parentvxlan: Set inner protocol before transmit (diff)
downloadlinux-dev-25e379c475121c658a344cfd5eeed9affe272d31.tar.xz
linux-dev-25e379c475121c658a344cfd5eeed9affe272d31.zip
Merge branch 'udp_gso'
Tom Herbert says: ==================== udp: Generalize GSO for UDP tunnels This patch set generalizes the UDP tunnel segmentation functions so that they can work with various protocol encapsulations. The primary change is to set the inner_protocol field in the skbuff when creating the encapsulated packet, and then in skb_udp_tunnel_segment this data is used to determine the function for segmenting the encapsulated packet. The inner_protocol field is overloaded to take either an Ethertype or IP protocol. The inner_protocol is set on transmit using skb_set_inner_ipproto or skb_set_inner_protocol functions. VXLAN and IP tunnels (for fou GSO) were modified to call these. Notes: - GSO for GRE/UDP where GRE checksum is enabled does not work. Handling this will require some special case code. - Software GSO now supports many varieties of encapsulation with SKB_GSO_UDP_TUNNEL{_CSUM}. We still need a mechanism to query for device support of particular combinations (I intend to add ndo_gso_check for that). - MPLS seems to be the only previous user of inner_protocol. I don't believe these patches can affect that. For supporting GSO with MPLS over UDP, the inner_protocol should be set using the helper functions in this patch. - GSO for L2TP/UDP should also be straightforward now. v2: - Respin for Eric's restructuring of skbuff. Tested GRE, IPIP, and SIT over fou as well as VLXAN. This was done using 200 TCP_STREAMs in netperf. GRE IPv4, FOU, UDP checksum enabled TCP_STREAM TSO enabled on tun interface 14.04% TX CPU utilization 13.17% RX CPU utilization 9211 Mbps TCP_STREAM TSO disabled on tun interface 27.82% TX CPU utilization 25.41% RX CPU utilization 9336 Mbps IPv4, FOU, UDP checksum disabled TCP_STREAM TSO enabled on tun interface 13.14% TX CPU utilization 23.18% RX CPU utilization 9277 Mbps TCP_STREAM TSO disabled on tun interface 30.00% TX CPU utilization 31.28% RX CPU utilization 9327 Mbps IPIP FOU, UDP checksum enabled TCP_STREAM TSO enabled on tun interface 15.28% TX CPU utilization 13.92% RX CPU utilization 9342 Mbps TCP_STREAM TSO disabled on tun interface 27.82% TX CPU utilization 25.41% RX CPU utilization 9336 Mbps FOU, UDP checksum disabled TCP_STREAM TSO enabled on tun interface 15.08% TX CPU utilization 24.64% RX CPU utilization 9226 Mbps TCP_STREAM TSO disabled on tun interface 30.00% TX CPU utilization 31.28% RX CPU utilization 9327 Mbps SIT FOU, UDP checksum enabled TCP_STREAM TSO enabled on tun interface 14.47% TX CPU utilization 14.58% RX CPU utilization 9106 Mbps TCP_STREAM TSO disabled on tun interface 31.82% TX CPU utilization 30.82% RX CPU utilization 9204 Mbps FOU, UDP checksum disabled TCP_STREAM TSO enabled on tun interface 15.70% TX CPU utilization 27.93% RX CPU utilization 9097 Mbps TCP_STREAM TSO disabled on tun interface 33.48% TX CPU utilization 37.36% RX CPU utilization 9197 Mbps VXLAN TCP_STREAM TSO enabled on tun interface 16.42% TX CPU utilization 23.66% RX CPU utilization 9081 Mbps TCP_STREAM TSO disabled on tun interface 30.32% TX CPU utilization 30.55% RX CPU utilization 9185 Mbps Baseline (no encp, TSO and LRO enabled) TCP_STREAM 11.85% TX CPU utilization 15.13% RX CPU utilization 9452 Mbps ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_stp_timer.c')
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