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ofproto/bond: Implement bond megaflow using recirculation

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Infrastructure to enable megaflow support for bond ports using
recirculation. This patch adds the following features:
* Generate RECIRC action when bond can benefit from recirculation.
* Populate post recirculation rules in a hidden table. Currently table 254.
* Uses post recirculation rules for bond rebalancing
* A recirculation implementation in dpif-netdev.

The goal of this patch is to be able to megaflow bond outputs and
thus greatly improve performance. However, this patch does not
actually improve the megaflow generation. It is left for a later commit.

Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Andy Zhou
2014-03-05 15:27:31 -08:00
parent ebed9f7859
commit adcf00ba35
20 changed files with 910 additions and 143 deletions
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28
lib/match.c
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@@ -788,6 +788,34 @@ match_hash(const struct match *match, uint32_t basis)
return flow_wildcards_hash(&match->wc, flow_hash(&match->flow, basis));
}
static bool
match_has_default_recirc_id(const struct match *m)
{
return m->flow.recirc_id == 0 && (m->wc.masks.recirc_id == UINT32_MAX ||
m->wc.masks.recirc_id == 0);
}
static bool
match_has_default_dp_hash(const struct match *m)
{
return ((m->flow.dp_hash | m->wc.masks.dp_hash) == 0);
}
/* Return true if the hidden fields of the match are set to the default values.
* The default values equals to those set up by match_init_hidden_fields(). */
bool
match_has_default_hidden_fields(const struct match *m)
{
return match_has_default_recirc_id(m) && match_has_default_dp_hash(m);
}
void
match_init_hidden_fields(struct match *m)
{
match_set_recirc_id(m, 0);
match_set_dp_hash_masked(m, 0, 0);
}
static void
format_eth_masked(struct ds *s, const char *name, const uint8_t eth[6],
const uint8_t mask[6])