summaryrefslogtreecommitdiff
path: root/net/ipv4/udp_offload.c
AgeCommit message (Collapse)Author
2014-07-29net/udp_offload: Use IS_ERR_OR_NULLHimangi Saraogi
This patch introduces the use of the macro IS_ERR_OR_NULL in place of tests for NULL and IS_ERR. The following Coccinelle semantic patch was used for making the change: @@ expression e; @@ - e == NULL || IS_ERR(e) + IS_ERR_OR_NULL(e) || ... Signed-off-by: Himangi Saraogi <himangi774@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-14udp: Move udp_tunnel_segment into udp_offload.cTom Herbert
Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-11net: Add skb_gro_postpull_rcsum to udp and vxlanTom Herbert
Need to gro_postpull_rcsum for GRO to work with checksum complete. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-04gre: Call gso_make_checksumTom Herbert
Call gso_make_checksum. This should have the benefit of using a checksum that may have been previously computed for the packet. This also adds NETIF_F_GSO_GRE_CSUM to differentiate devices that offload GRE GSO with and without the GRE checksum offloaed. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-04net: Add GSO support for UDP tunnels with checksumTom Herbert
Added a new netif feature for GSO_UDP_TUNNEL_CSUM. This indicates that a device is capable of computing the UDP checksum in the encapsulating header of a UDP tunnel. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-04net/ipv4: Use proper RCU APIs for writer-side in udp_offload.cShlomo Pongratz
RCU writer side should use rcu_dereference_protected() and not rcu_dereference(), fix that. This also removes the "suspicious RCU usage" warning seen when running with CONFIG_PROVE_RCU. Also, don't use rcu_assign_pointer/rcu_dereference for pointers which are invisible beyond the udp offload code. Fixes: b582ef0 ('net: Add GRO support for UDP encapsulating protocols') Reported-by: Eric Dumazet <edumazet@google.com> Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Shlomo Pongratz <shlomop@mellanox.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-30net/ipv4: Use non-atomic allocation of udp offloads structure instanceOr Gerlitz
Since udp_add_offload() can be called from non-sleepable context e.g under this call tree from the vxlan driver use case: vxlan_socket_create() <-- holds the spinlock -> vxlan_notify_add_rx_port() -> udp_add_offload() <-- schedules we should allocate the udp_offloads structure in atomic manner. Fixes: b582ef0 ('net: Add GRO support for UDP encapsulating protocols') Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-23net/udp_offload: Handle static checker complaintsShlomo Pongratz
Fixed few issues around using __rcu prefix and rcu_assign_pointer, also fixed a warning print to use ntohs(port) and not htons(port). net/ipv4/udp_offload.c:112:9: error: incompatible types in comparison expression (different address spaces) net/ipv4/udp_offload.c:113:9: error: incompatible types in comparison expression (different address spaces) net/ipv4/udp_offload.c:176:19: error: incompatible types in comparison expression (different address spaces) Signed-off-by: Shlomo Pongratz <shlomop@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-21net: Add GRO support for UDP encapsulating protocolsOr Gerlitz
Add GRO handlers for protocols that do UDP encapsulation, with the intent of being able to coalesce packets which encapsulate packets belonging to the same TCP session. For GRO purposes, the destination UDP port takes the role of the ether type field in the ethernet header or the next protocol in the IP header. The UDP GRO handler will only attempt to coalesce packets whose destination port is registered to have gro handler. Use a mark on the skb GRO CB data to disallow (flush) running the udp gro receive code twice on a packet. This solves the problem of udp encapsulated packets whose inner VM packet is udp and happen to carry a port which has registered offloads. Signed-off-by: Shlomo Pongratz <shlomop@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-02ipv4: fix tunneled VM traffic over hw VXLAN/GRE GSO NICWei-Chun Chao
VM to VM GSO traffic is broken if it goes through VXLAN or GRE tunnel and the physical NIC on the host supports hardware VXLAN/GRE GSO offload (e.g. bnx2x and next-gen mlx4). Two issues - (VXLAN) VM traffic has SKB_GSO_DODGY and SKB_GSO_UDP_TUNNEL with SKB_GSO_TCP/UDP set depending on the inner protocol. GSO header integrity check fails in udp4_ufo_fragment if inner protocol is TCP. Also gso_segs is calculated incorrectly using skb->len that includes tunnel header. Fix: robust check should only be applied to the inner packet. (VXLAN & GRE) Once GSO header integrity check passes, NULL segs is returned and the original skb is sent to hardware. However the tunnel header is already pulled. Fix: tunnel header needs to be restored so that hardware can perform GSO properly on the original packet. Signed-off-by: Wei-Chun Chao <weichunc@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-19ipip: add GSO/TSO supportEric Dumazet
Now inet_gso_segment() is stackable, its relatively easy to implement GSO/TSO support for IPIP Performance results, when segmentation is done after tunnel device (as no NIC is yet enabled for TSO IPIP support) : Before patch : lpq83:~# ./netperf -H 7.7.9.84 -Cc MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 7.7.9.84 () port 0 AF_INET Recv Send Send Utilization Service Demand Socket Socket Message Elapsed Send Recv Send Recv Size Size Size Time Throughput local remote local remote bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB 87380 16384 16384 10.00 3357.88 5.09 3.70 2.983 2.167 After patch : lpq83:~# ./netperf -H 7.7.9.84 -Cc MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 7.7.9.84 () port 0 AF_INET Recv Send Send Utilization Service Demand Socket Socket Message Elapsed Send Recv Send Recv Size Size Size Time Throughput local remote local remote bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB 87380 16384 16384 10.00 7710.19 4.52 6.62 1.152 1.687 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-12net: udp4: move GSO functions to udp_offloadDaniel Borkmann
Similarly to TCP offloading and UDPv6 offloading, move all related UDPv4 functions to udp_offload.c to make things more explicit. Also, by this, we can make those functions static. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit (git 2.34.1) at 2024-05-20 16:44:20 +0000