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bnxt_en: Add a helper function to configure MRU and RSS

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Add a new helper function that will configure MRU and RSS table
of a VNIC. This will be useful when we configure both on a VNIC
when resetting an RX ring.  This function will be used again in
the next bug fix patch where we have to reconfigure VNICs for RSS
contexts.

Suggested-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: David Wei <dw@davidwei.uk>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250613231841.377988-3-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Pavan Chebbi
2025-06-13 16:18:40 -07:00
committed by Jakub Kicinski
parent 1e9ac33fa2
commit e11baaea94
1 changed files with 26 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/net/ethernet/broadcom/bnxt/bnxt.c
+26 -11
View File
@@ -10780,6 +10780,26 @@ void bnxt_del_one_rss_ctx(struct bnxt *bp, struct bnxt_rss_ctx *rss_ctx,
bp->num_rss_ctx--;
}
static int bnxt_set_vnic_mru_p5(struct bnxt *bp, struct bnxt_vnic_info *vnic,
u16 mru)
{
int rc;
if (mru) {
rc = bnxt_hwrm_vnic_set_rss_p5(bp, vnic, true);
if (rc) {
netdev_err(bp->dev, "hwrm vnic %d set rss failure rc: %d\n",
vnic->vnic_id, rc);
return rc;
}
}
vnic->mru = mru;
bnxt_hwrm_vnic_update(bp, vnic,
VNIC_UPDATE_REQ_ENABLES_MRU_VALID);
return 0;
}
static void bnxt_hwrm_realloc_rss_ctx_vnic(struct bnxt *bp)
{
bool set_tpa = !!(bp->flags & BNXT_FLAG_TPA);
@@ -15927,6 +15947,7 @@ static int bnxt_queue_start(struct net_device *dev, void *qmem, int idx)
struct bnxt_vnic_info *vnic;
struct bnxt_napi *bnapi;
int i, rc;
u16 mru;
rxr = &bp->rx_ring[idx];
clone = qmem;
@@ -15977,18 +15998,13 @@ static int bnxt_queue_start(struct net_device *dev, void *qmem, int idx)
napi_enable_locked(&bnapi->napi);
bnxt_db_nq_arm(bp, &cpr->cp_db, cpr->cp_raw_cons);
mru = bp->dev->mtu + ETH_HLEN + VLAN_HLEN;
for (i = 0; i < bp->nr_vnics; i++) {
vnic = &bp->vnic_info[i];
rc = bnxt_hwrm_vnic_set_rss_p5(bp, vnic, true);
if (rc) {
netdev_err(bp->dev, "hwrm vnic %d set rss failure rc: %d\n",
vnic->vnic_id, rc);
rc = bnxt_set_vnic_mru_p5(bp, vnic, mru);
if (rc)
return rc;
}
vnic->mru = bp->dev->mtu + ETH_HLEN + VLAN_HLEN;
bnxt_hwrm_vnic_update(bp, vnic,
VNIC_UPDATE_REQ_ENABLES_MRU_VALID);
}
return 0;
@@ -16013,9 +16029,8 @@ static int bnxt_queue_stop(struct net_device *dev, void *qmem, int idx)
for (i = 0; i < bp->nr_vnics; i++) {
vnic = &bp->vnic_info[i];
vnic->mru = 0;
bnxt_hwrm_vnic_update(bp, vnic,
VNIC_UPDATE_REQ_ENABLES_MRU_VALID);
bnxt_set_vnic_mru_p5(bp, vnic, 0);
}
/* Make sure NAPI sees that the VNIC is disabled */
synchronize_net();