linux/net/openvswitch/flow.h, branch v3.13

openvswitch: TCP flags matching support.

2013-11-02T01:43:45Z

tcp_flags=flags/mask Bitwise match on TCP flags. The flags and mask are 16-bit num‐ bers written in decimal or in hexadecimal prefixed by 0x. Each 1-bit in mask requires that the corresponding bit in port must match. Each 0-bit in mask causes the corresponding bit to be ignored. TCP protocol currently defines 9 flag bits, and additional 3 bits are reserved (must be transmitted as zero), see RFCs 793, 3168, and 3540. The flag bits are, numbering from the least significant bit: 0: FIN No more data from sender. 1: SYN Synchronize sequence numbers. 2: RST Reset the connection. 3: PSH Push function. 4: ACK Acknowledgement field significant. 5: URG Urgent pointer field significant. 6: ECE ECN Echo. 7: CWR Congestion Windows Reduced. 8: NS Nonce Sum. 9-11: Reserved. 12-15: Not matchable, must be zero. Signed-off-by: Jarno Rajahalme Signed-off-by: Jesse Gross

openvswitch: Widen TCP flags handling.

2013-11-02T01:43:45Z

Widen TCP flags handling from 7 bits (uint8_t) to 12 bits (uint16_t). The kernel interface remains at 8 bits, which makes no functional difference now, as none of the higher bits is currently of interest to the userspace. Signed-off-by: Jarno Rajahalme Signed-off-by: Jesse Gross

openvswitch: Restructure datapath.c and flow.c

2013-10-04T01:16:47Z

Over the time datapath.c and flow.c has became pretty large files. Following patch restructures functionality of component into three different components: flow.c: contains flow extract. flow_netlink.c: netlink flow api. flow_table.c: flow table api. This patch restructures code without changing logic. Signed-off-by: Pravin B Shelar Signed-off-by: Jesse Gross

openvswitch: Fix alignment of struct sw_flow_key.

2013-09-05T19:54:37Z

sw_flow_key alignment was declared as " __aligned(__alignof__(long))". However, this breaks on the m68k architecture where long is 32 bit in size but 16 bit aligned by default. This aligns to the size of a long to ensure that we can always do comparsions in full long-sized chunks. It also adds an additional build check to catch any reduction in alignment. CC: Andy Zhou Reported-by: Fengguang Wu Reported-by: Geert Uytterhoeven Signed-off-by: Jesse Gross Signed-off-by: David S. Miller

openvswitch: optimize flow compare and mask functions

2013-08-27T20:13:09Z

Make sure the sw_flow_key structure and valid mask boundaries are always machine word aligned. Optimize the flow compare and mask operations using machine word size operations. This patch improves throughput on average by 15% when CPU is the bottleneck of forwarding packets. This patch is inspired by ideas and code from a patch submitted by Peter Klausler titled "replace memcmp() with specialized comparator". However, The original patch only optimizes for architectures support unaligned machine word access. This patch optimizes for all architectures. Signed-off-by: Andy Zhou Signed-off-by: Jesse Gross

openvswitch: Rename key_len to key_end

2013-08-26T21:03:14Z

Key_end is a better name describing the ending boundary than key_len. Rename those variables to make it less confusing. Signed-off-by: Andy Zhou Signed-off-by: Jesse Gross

openvswitch: Add SCTP support

2013-08-26T21:03:13Z

This patch adds support for rewriting SCTP src,dst ports similar to the functionality already available for TCP/UDP. Rewriting SCTP ports is expensive due to double-recalculation of the SCTP checksums; this is performed to ensure that packets traversing OVS with invalid checksums will continue to the destination with any checksum corruption intact. Reviewed-by: Simon Horman Signed-off-by: Joe Stringer Signed-off-by: Ben Pfaff Signed-off-by: Jesse Gross

openvswitch: Mega flow implementation

2013-08-23T23:43:07Z

Add wildcarded flow support in kernel datapath. Wildcarded flow can improve OVS flow set up performance by avoid sending matching new flows to the user space program. The exact performance boost will largely dependent on wildcarded flow hit rate. In case all new flows hits wildcard flows, the flow set up rate is within 5% of that of linux bridge module. Pravin has made significant contributions to this patch. Including API clean ups and bug fixes. Signed-off-by: Pravin B Shelar Signed-off-by: Andy Zhou Signed-off-by: Jesse Gross

openvswitch: Add gre tunnel support.

2013-06-20T01:07:42Z

Add gre vport implementation. Most of gre protocol processing is pushed to gre module. It make use of gre demultiplexer therefore it can co-exist with linux device based gre tunnels. Signed-off-by: Pravin B Shelar Acked-by: Jesse Gross Signed-off-by: David S. Miller

openvswitch: Optimize flow key match for non tunnel flows.

2013-06-20T01:07:41Z

Following patch adds start offset for sw_flow-key, so that we can skip tunneling information in key for non-tunnel flows. Signed-off-by: Pravin B Shelar Acked-by: Jesse Gross Signed-off-by: David S. Miller