On Fri, Aug 25, 2017 at 05:40:27PM +0100, Ian Stokes wrote:
> The patch modifies the miniflow extract function to hande the case where
> the network protocol for a packet is ESP. In this case the SPI value in
> the ESP header is extracted and set in the minflow map.
>
> Signed-off-by: Ian Stokes <ian.sto...@intel.com>
> ---
> lib/flow.c | 11 ++++++++++-
> 1 files changed, 10 insertions(+), 1 deletions(-)
>
> diff --git a/lib/flow.c b/lib/flow.c
> index b2b10aa..428ff7a 100644
> --- a/lib/flow.c
> +++ b/lib/flow.c
> @@ -643,6 +643,7 @@ miniflow_extract(struct dp_packet *packet, struct
> miniflow *dst)
> uint8_t nw_frag, nw_tos, nw_ttl, nw_proto;
> uint8_t *ct_nw_proto_p = NULL;
> ovs_be16 ct_tp_src = 0, ct_tp_dst = 0;
> + ovs_be32 esp_spi = 0;
>
> /* Metadata. */
> if (flow_tnl_dst_is_set(&md->tunnel)) {
> @@ -920,7 +921,15 @@ miniflow_extract(struct dp_packet *packet, struct
> miniflow *dst)
> miniflow_push_be16(mf, ct_tp_src, ct_tp_src);
> miniflow_push_be16(mf, ct_tp_dst, ct_tp_dst);
> }
> - } else if (OVS_LIKELY(nw_proto == IPPROTO_SCTP)) {
> + } else if (OVS_LIKELY(nw_proto == IPPROTO_ESP)) {
> + if (OVS_LIKELY(size >= ESP_HEADER_LEN)) {
> + const struct esp_header *esp = data;
> +
> + esp_spi = esp->spi;
> + miniflow_push_be32(mf, spi, esp_spi);
> + miniflow_push_be32(mf, pad4, 0); /* Pad for ESP */
> + }
> + }else if (OVS_LIKELY(nw_proto == IPPROTO_SCTP)) {
> if (OVS_LIKELY(size >= SCTP_HEADER_LEN)) {
> const struct sctp_header *sctp = data;
This removes a space from the SCTP 'if' statement, it would be better
without that change.
Thanks,
Ben.
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