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net/sfc: introduce flow allocation and free path

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Riverhead boards maintain support for MAE, a low-level Match-Action Engine.
The upcoming patches will bring support for MAE to RTE flow implementation.

A follow-up patch will introduce MAE-specific specification cleanup method.
In order to prepare for the patch, introduce flow allocation and free path.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
This commit is contained in:
Ivan Malov 2020-03-05 10:47:50 +00:00 committed by Ferruh Yigit
parent 6f63bf7bda
commit 7ba166841c
1 changed files with 37 additions and 12 deletions
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49
drivers/net/sfc/sfc_flow.c
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@ -2309,6 +2309,27 @@ fail_bad_value:
return rc;
}
static struct rte_flow *
sfc_flow_zmalloc(struct rte_flow_error *error)
{
struct rte_flow *flow;
flow = rte_zmalloc("sfc_rte_flow", sizeof(*flow), 0);
if (flow == NULL) {
rte_flow_error_set(error, ENOMEM,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
"Failed to allocate memory");
}
return flow;
}
static void
sfc_flow_free(__rte_unused struct sfc_adapter *sa, struct rte_flow *flow)
{
rte_free(flow);
}
static int
sfc_flow_validate(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
@ -2316,11 +2337,19 @@ sfc_flow_validate(struct rte_eth_dev *dev,
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
struct rte_flow flow;
struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
struct rte_flow *flow;
int rc;
memset(&flow, 0, sizeof(flow));
flow = sfc_flow_zmalloc(error);
if (flow == NULL)
return -rte_errno;
return sfc_flow_parse(dev, attr, pattern, actions, &flow, error);
rc = sfc_flow_parse(dev, attr, pattern, actions, flow, error);
sfc_flow_free(sa, flow);
return rc;
}
static struct rte_flow *
@ -2334,13 +2363,9 @@ sfc_flow_create(struct rte_eth_dev *dev,
struct rte_flow *flow = NULL;
int rc;
flow = rte_zmalloc("sfc_rte_flow", sizeof(*flow), 0);
if (flow == NULL) {
rte_flow_error_set(error, ENOMEM,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
"Failed to allocate memory");
flow = sfc_flow_zmalloc(error);
if (flow == NULL)
goto fail_no_mem;
}
rc = sfc_flow_parse(dev, attr, pattern, actions, flow, error);
if (rc != 0)
@ -2368,7 +2393,7 @@ fail_filter_insert:
TAILQ_REMOVE(&sa->flow_list, flow, entries);
fail_bad_value:
rte_free(flow);
sfc_flow_free(sa, flow);
sfc_adapter_unlock(sa);
fail_no_mem:
@ -2393,7 +2418,7 @@ sfc_flow_remove(struct sfc_adapter *sa,
}
TAILQ_REMOVE(&sa->flow_list, flow, entries);
rte_free(flow);
sfc_flow_free(sa, flow);
return rc;
}
@ -2497,7 +2522,7 @@ sfc_flow_fini(struct sfc_adapter *sa)
while ((flow = TAILQ_FIRST(&sa->flow_list)) != NULL) {
TAILQ_REMOVE(&sa->flow_list, flow, entries);
rte_free(flow);
sfc_flow_free(sa, flow);
}
}