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nfp: abm: save RED's parameters 

Use the new driver Qdisc structure to keep track of parameters
of RED Qdiscs.  This way as the Qdisc moves around in the hierarchy
we will be able to configure the HW appropriately.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2018-11-12 14:58:18 -08:00 committed by David S. Miller
parent 6c5dbda0d4
commit 52db4eaca5
2 changed files with 18 additions and 1 deletions
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14
drivers/net/ethernet/netronome/nfp/abm/main.h
View File

@ -89,6 +89,11 @@ enum nfp_qdisc_type {
* @use_cnt: number of attachment points in the hierarchy
* @num_children: current size of the @children array
* @children: pointers to children
*
* @params_ok: parameters of this Qdisc are OK for offload
*
* @red: RED Qdisc specific parameters and state
* @red.threshold: ECN marking threshold
*/
struct nfp_qdisc {
struct net_device *netdev;
@ -98,6 +103,15 @@ struct nfp_qdisc {
unsigned int use_cnt;
unsigned int num_children;
struct nfp_qdisc **children;
bool params_ok;
union {
/* TC_SETUP_QDISC_RED */
struct {
u32 threshold;
} red;
};
};
/**

5
drivers/net/ethernet/netronome/nfp/abm/qdisc.c
View File

@ -375,7 +375,10 @@ nfp_abm_red_replace(struct net_device *netdev, struct nfp_abm_link *alink,
qdisc->children[0] = NFP_QDISC_UNTRACKED;
}
if (!nfp_abm_red_check_params(alink, opt)) {
qdisc->params_ok = nfp_abm_red_check_params(alink, opt);
if (qdisc->params_ok) {
qdisc->red.threshold = opt->set.min;
} else {
err = -EINVAL;
goto err_destroy;
}