drivers/infiniband/hw/hfi1/netdev.h | 2 +- drivers/infiniband/hw/hfi1/netdev_rx.c | 9 +++++++-- 2 files changed, 8 insertions(+), 3 deletions(-)
Embedding net_device into structures prohibits the usage of flexible
arrays in the net_device structure. For more details, see the discussion
at [1].
Un-embed the net_device from struct hfi1_netdev_rx by converting it
into a pointer. Then use the leverage alloc_netdev() to allocate the
net_device object at hfi1_alloc_rx().
[1] https://lore.kernel.org/all/20240229225910.79e224cf@kernel.org/
Acked-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Breno Leitao <leitao@debian.org>
---
Changelog
v5:
* Basically replaced the old alloc_netdev() by the new helper
alloc_netdev_dummy().
v4:
* Fix the changelog format
v3:
* Re-worded the comment, by removing the first paragraph.
v2:
* Free struct hfi1_netdev_rx allocation if alloc_netdev() fails
* Pass zero as the private size for alloc_netdev().
* Remove wrong reference for iwl in the comments
---
drivers/infiniband/hw/hfi1/netdev.h | 2 +-
drivers/infiniband/hw/hfi1/netdev_rx.c | 9 +++++++--
2 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/netdev.h b/drivers/infiniband/hw/hfi1/netdev.h
index 8aa074670a9c..07c8f77c9181 100644
--- a/drivers/infiniband/hw/hfi1/netdev.h
+++ b/drivers/infiniband/hw/hfi1/netdev.h
@@ -49,7 +49,7 @@ struct hfi1_netdev_rxq {
* When 0 receive queues will be freed.
*/
struct hfi1_netdev_rx {
- struct net_device rx_napi;
+ struct net_device *rx_napi;
struct hfi1_devdata *dd;
struct hfi1_netdev_rxq *rxq;
int num_rx_q;
diff --git a/drivers/infiniband/hw/hfi1/netdev_rx.c b/drivers/infiniband/hw/hfi1/netdev_rx.c
index 720d4c85c9c9..8608044203bb 100644
--- a/drivers/infiniband/hw/hfi1/netdev_rx.c
+++ b/drivers/infiniband/hw/hfi1/netdev_rx.c
@@ -188,7 +188,7 @@ static int hfi1_netdev_rxq_init(struct hfi1_netdev_rx *rx)
int i;
int rc;
struct hfi1_devdata *dd = rx->dd;
- struct net_device *dev = &rx->rx_napi;
+ struct net_device *dev = rx->rx_napi;
rx->num_rx_q = dd->num_netdev_contexts;
rx->rxq = kcalloc_node(rx->num_rx_q, sizeof(*rx->rxq),
@@ -360,7 +360,11 @@ int hfi1_alloc_rx(struct hfi1_devdata *dd)
if (!rx)
return -ENOMEM;
rx->dd = dd;
- init_dummy_netdev(&rx->rx_napi);
+ rx->rx_napi = alloc_netdev_dummy(0);
+ if (!rx->rx_napi) {
+ kfree(rx);
+ return -ENOMEM;
+ }
xa_init(&rx->dev_tbl);
atomic_set(&rx->enabled, 0);
@@ -374,6 +378,7 @@ void hfi1_free_rx(struct hfi1_devdata *dd)
{
if (dd->netdev_rx) {
dd_dev_info(dd, "hfi1 rx freed\n");
+ free_netdev(dd->netdev_rx->rx_napi);
kfree(dd->netdev_rx);
dd->netdev_rx = NULL;
}
--
2.43.0On Fri, Apr 26, 2024 at 01:56:05AM -0700, Breno Leitao wrote: > Embedding net_device into structures prohibits the usage of flexible > arrays in the net_device structure. For more details, see the discussion > at [1]. > > Un-embed the net_device from struct hfi1_netdev_rx by converting it > into a pointer. Then use the leverage alloc_netdev() to allocate the > net_device object at hfi1_alloc_rx(). > > [1] https://lore.kernel.org/all/20240229225910.79e224cf@kernel.org/ > > Acked-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> > Signed-off-by: Breno Leitao <leitao@debian.org> > --- > Changelog > > v5: > * Basically replaced the old alloc_netdev() by the new helper > alloc_netdev_dummy(). > v4: > * Fix the changelog format > v3: > * Re-worded the comment, by removing the first paragraph. > v2: > * Free struct hfi1_netdev_rx allocation if alloc_netdev() fails > * Pass zero as the private size for alloc_netdev(). > * Remove wrong reference for iwl in the comments > --- > > drivers/infiniband/hw/hfi1/netdev.h | 2 +- > drivers/infiniband/hw/hfi1/netdev_rx.c | 9 +++++++-- > 2 files changed, 8 insertions(+), 3 deletions(-) Dennis, Do you plan to send anything to rdma-next which can potentially create conflicts with netdev in this cycle? If not, it will be safe to apply this patch directly to net-next. Thanks
On 4/30/24 8:50 AM, Leon Romanovsky wrote: > On Fri, Apr 26, 2024 at 01:56:05AM -0700, Breno Leitao wrote: >> Embedding net_device into structures prohibits the usage of flexible >> arrays in the net_device structure. For more details, see the discussion >> at [1]. >> >> Un-embed the net_device from struct hfi1_netdev_rx by converting it >> into a pointer. Then use the leverage alloc_netdev() to allocate the >> net_device object at hfi1_alloc_rx(). >> >> [1] https://lore.kernel.org/all/20240229225910.79e224cf@kernel.org/ >> >> Acked-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> >> Signed-off-by: Breno Leitao <leitao@debian.org> >> --- >> Changelog >> >> v5: >> * Basically replaced the old alloc_netdev() by the new helper >> alloc_netdev_dummy(). >> v4: >> * Fix the changelog format >> v3: >> * Re-worded the comment, by removing the first paragraph. >> v2: >> * Free struct hfi1_netdev_rx allocation if alloc_netdev() fails >> * Pass zero as the private size for alloc_netdev(). >> * Remove wrong reference for iwl in the comments >> --- >> >> drivers/infiniband/hw/hfi1/netdev.h | 2 +- >> drivers/infiniband/hw/hfi1/netdev_rx.c | 9 +++++++-- >> 2 files changed, 8 insertions(+), 3 deletions(-) > > Dennis, > > Do you plan to send anything to rdma-next which can potentially create > conflicts with netdev in this cycle? > > If not, it will be safe to apply this patch directly to net-next. > > Thanks Nothing right now. Should be safe to sent to net-next. FYI, since I talked about it publicly at the OFA Workshop recently. We will be starting the upstream of support for our new HW, soon. -Denny
On Tue, Apr 30, 2024 at 10:03:49AM -0400, Dennis Dalessandro wrote: > On 4/30/24 8:50 AM, Leon Romanovsky wrote: > > On Fri, Apr 26, 2024 at 01:56:05AM -0700, Breno Leitao wrote: > >> Embedding net_device into structures prohibits the usage of flexible > >> arrays in the net_device structure. For more details, see the discussion > >> at [1]. > >> > >> Un-embed the net_device from struct hfi1_netdev_rx by converting it > >> into a pointer. Then use the leverage alloc_netdev() to allocate the > >> net_device object at hfi1_alloc_rx(). > >> > >> [1] https://lore.kernel.org/all/20240229225910.79e224cf@kernel.org/ > >> > >> Acked-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> > >> Signed-off-by: Breno Leitao <leitao@debian.org> > >> --- > >> Changelog > >> > >> v5: > >> * Basically replaced the old alloc_netdev() by the new helper > >> alloc_netdev_dummy(). > >> v4: > >> * Fix the changelog format > >> v3: > >> * Re-worded the comment, by removing the first paragraph. > >> v2: > >> * Free struct hfi1_netdev_rx allocation if alloc_netdev() fails > >> * Pass zero as the private size for alloc_netdev(). > >> * Remove wrong reference for iwl in the comments > >> --- > >> > >> drivers/infiniband/hw/hfi1/netdev.h | 2 +- > >> drivers/infiniband/hw/hfi1/netdev_rx.c | 9 +++++++-- > >> 2 files changed, 8 insertions(+), 3 deletions(-) > > > > Dennis, > > > > Do you plan to send anything to rdma-next which can potentially create > > conflicts with netdev in this cycle? > > > > If not, it will be safe to apply this patch directly to net-next. > > > > Thanks > > Nothing right now. Should be safe to sent to net-next. Jakub, can you please take this patch? > > FYI, since I talked about it publicly at the OFA Workshop recently. We will be > starting the upstream of support for our new HW, soon. Great, thanks > > -Denny
On Tue, 30 Apr 2024 17:10:39 +0300 Leon Romanovsky wrote: > > Nothing right now. Should be safe to sent to net-next. > > Jakub, can you please take this patch? We'll need a repost, it wasn't CCed to netdev.
On Tue, Apr 30, 2024 at 07:55:34AM -0700, Jakub Kicinski wrote: > On Tue, 30 Apr 2024 17:10:39 +0300 Leon Romanovsky wrote: > > > Nothing right now. Should be safe to sent to net-next. > > > > Jakub, can you please take this patch? > > We'll need a repost, it wasn't CCed to netdev. I can repost it and CC netdev.
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