From 7555b7f3385fb0cf5416cf38b4f7bd2bc1312f23 Mon Sep 17 00:00:00 2001 From: Amit Cohen Date: Tue, 18 Jun 2024 13:34:41 +0200 Subject: [PATCH] mlxsw: pci: Store CQ pointer as part of RDQ structure Next patches will add support for page pool in mlxsw driver. Page pool will be used to allocate buffers for RDQ and will use NAPI instance of the appropriate CQ (RDQ is mapped 1:1 to CQ). To allow pool initialization as part of CQ init, when NAPI is initialized, page_pool structure will be as part of CQ structure. Later, the allocations for RDQ will be done from the pool in the appropriate CQ. To allow access to the appropriate pool, set CQ pointer as part of RDQ initialization. Signed-off-by: Amit Cohen Reviewed-by: Petr Machata Reviewed-by: Ido Schimmel Signed-off-by: Petr Machata Reviewed-by: Jiri Pirko Link: https://lore.kernel.org/r/d60918ca1e142a554af1df9c1152cdac83854a3b.1718709196.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlxsw/pci.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index fe6df5a92616b..8751da09a6c1b 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -92,6 +92,9 @@ struct mlxsw_pci_queue { struct { struct tasklet_struct tasklet; } eq; + struct { + struct mlxsw_pci_queue *cq; + } rdq; } u; }; @@ -434,6 +437,7 @@ static int mlxsw_pci_rdq_init(struct mlxsw_pci *mlxsw_pci, char *mbox, cq = mlxsw_pci_cq_get(mlxsw_pci, cq_num); cq->u.cq.dq = q; + q->u.rdq.cq = cq; mlxsw_pci_queue_doorbell_producer_ring(mlxsw_pci, q); @@ -455,6 +459,7 @@ static int mlxsw_pci_rdq_init(struct mlxsw_pci *mlxsw_pci, char *mbox, elem_info = mlxsw_pci_queue_elem_info_get(q, i); mlxsw_pci_rdq_skb_free(mlxsw_pci, elem_info); } + q->u.rdq.cq = NULL; cq->u.cq.dq = NULL; mlxsw_cmd_hw2sw_rdq(mlxsw_pci->core, q->num);