[PATCH 5.10 043/106] xen/netback: do some code cleanup

Greg Kroah-Hartman
2022-12-12T13:14:34Z

From: Juergen Gross <jgross@suse.com>

[ Upstream commit 5834e72eda0b7e5767eb107259d98eef19ebd11f ]

Remove some unused macros and functions, make local functions static.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/20220608043726.9380-1-jgross@suse.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 74e7e1efdad4 ("xen/netback: don't call kfree_skb() with interrupts disabled")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/xen-netback/common.h | 12 ------------
drivers/net/xen-netback/interface.c | 16 +---------------
drivers/net/xen-netback/netback.c | 4 +++-
drivers/net/xen-netback/rx.c | 2 +-
4 files changed, 5 insertions(+), 29 deletions(-)

diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h
index 6a9178896c90..945647128c0e 100644
--- a/drivers/net/xen-netback/common.h
+++ b/drivers/net/xen-netback/common.h
@@ -48,7 +48,6 @@
#include <linux/debugfs.h>

typedef unsigned int pending_ring_idx_t;
-#define INVALID_PENDING_RING_IDX (~0U)

struct pending_tx_info {
struct xen_netif_tx_request req; /* tx request */
@@ -82,8 +81,6 @@ struct xenvif_rx_meta {
/* Discriminate from any valid pending_idx value. */
#define INVALID_PENDING_IDX 0xFFFF

-#define MAX_BUFFER_OFFSET XEN_PAGE_SIZE
-
#define MAX_PENDING_REQS XEN_NETIF_TX_RING_SIZE

/* The maximum number of frags is derived from the size of a grant (same
@@ -367,11 +364,6 @@ void xenvif_free(struct xenvif *vif);
int xenvif_xenbus_init(void);
void xenvif_xenbus_fini(void);

-int xenvif_schedulable(struct xenvif *vif);
-
-int xenvif_queue_stopped(struct xenvif_queue *queue);
-void xenvif_wake_queue(struct xenvif_queue *queue);
-
/* (Un)Map communication rings. */
void xenvif_unmap_frontend_data_rings(struct xenvif_queue *queue);
int xenvif_map_frontend_data_rings(struct xenvif_queue *queue,
@@ -394,7 +386,6 @@ int xenvif_dealloc_kthread(void *data);
irqreturn_t xenvif_ctrl_irq_fn(int irq, void *data);

bool xenvif_have_rx_work(struct xenvif_queue *queue, bool test_kthread);
-void xenvif_rx_action(struct xenvif_queue *queue);
void xenvif_rx_queue_tail(struct xenvif_queue *queue, struct sk_buff *skb);

void xenvif_carrier_on(struct xenvif *vif);
@@ -402,9 +393,6 @@ void xenvif_carrier_on(struct xenvif *vif);
/* Callback from stack when TX packet can be released */
void xenvif_zerocopy_callback(struct ubuf_info *ubuf, bool zerocopy_success);

-/* Unmap a pending page and release it back to the guest */
-void xenvif_idx_unmap(struct xenvif_queue *queue, u16 pending_idx);
-
static inline pending_ring_idx_t nr_pending_reqs(struct xenvif_queue *queue)
{
return MAX_PENDING_REQS -
diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c
index 7ce9807fc24c..645a804ab788 100644
--- a/drivers/net/xen-netback/interface.c
+++ b/drivers/net/xen-netback/interface.c
@@ -70,7 +70,7 @@ void xenvif_skb_zerocopy_complete(struct xenvif_queue *queue)
wake_up(&queue->dealloc_wq);
}

-int xenvif_schedulable(struct xenvif *vif)
+static int xenvif_schedulable(struct xenvif *vif)
{
return netif_running(vif->dev) &&
test_bit(VIF_STATUS_CONNECTED, &vif->status) &&
@@ -178,20 +178,6 @@ irqreturn_t xenvif_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}

-int xenvif_queue_stopped(struct xenvif_queue *queue)
-{
- struct net_device *dev = queue->vif->dev;
- unsigned int id = queue->id;
- return netif_tx_queue_stopped(netdev_get_tx_queue(dev, id));
-}
-
-void xenvif_wake_queue(struct xenvif_queue *queue)
-{
- struct net_device *dev = queue->vif->dev;
- unsigned int id = queue->id;
- netif_tx_wake_queue(netdev_get_tx_queue(dev, id));
-}
-
static u16 xenvif_select_queue(struct net_device *dev, struct sk_buff *skb,
struct net_device *sb_dev)
{
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 06fd61b71d37..fed0f7458e18 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -112,6 +112,8 @@ static void make_tx_response(struct xenvif_queue *queue,
s8 st);
static void push_tx_responses(struct xenvif_queue *queue);

+static void xenvif_idx_unmap(struct xenvif_queue *queue, u16 pending_idx);
+
static inline int tx_work_todo(struct xenvif_queue *queue);

static inline unsigned long idx_to_pfn(struct xenvif_queue *queue,
@@ -1440,7 +1442,7 @@ static void push_tx_responses(struct xenvif_queue *queue)
notify_remote_via_irq(queue->tx_irq);
}

-void xenvif_idx_unmap(struct xenvif_queue *queue, u16 pending_idx)
+static void xenvif_idx_unmap(struct xenvif_queue *queue, u16 pending_idx)
{
int ret;
struct gnttab_unmap_grant_ref tx_unmap_op;
diff --git a/drivers/net/xen-netback/rx.c b/drivers/net/xen-netback/rx.c
index a0335407be42..932762177110 100644
--- a/drivers/net/xen-netback/rx.c
+++ b/drivers/net/xen-netback/rx.c
@@ -486,7 +486,7 @@ static void xenvif_rx_skb(struct xenvif_queue *queue)

#define RX_BATCH_SIZE 64

-void xenvif_rx_action(struct xenvif_queue *queue)
+static void xenvif_rx_action(struct xenvif_queue *queue)
{
struct sk_buff_head completed_skbs;
unsigned int work_done = 0;
--
2.35.1