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authorVijaya Mohan Guvva <vijaya.guvva@cavium.com>2017-11-03 22:17:44 +0300
committerDavid S. Miller <davem@davemloft.net>2017-11-04 03:17:29 +0300
commitbf5345882bd18bc1b4966d170c0491ebe5c9a7d6 (patch)
tree9cfffbff75582395a4ca35f6170d797cc74b3330
parentde4cc8bd68c0aefdbbdbdaad28185f1c0ac18442 (diff)
downloadlinux-bf5345882bd18bc1b4966d170c0491ebe5c9a7d6.tar.xz
liquidio: Fix an issue with multiple switchdev enable disables
Return success if the same dispatch function is being registered for a given opcode and subcode, there by allow multiple switchdev enable and disables. Signed-off-by: Vijaya Mohan Guvva <vijaya.guvva@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/cavium/liquidio/octeon_device.c4
-rw-r--r--drivers/net/ethernet/cavium/liquidio/octeon_droq.c4
-rw-r--r--drivers/net/ethernet/cavium/liquidio/octeon_droq.h3
3 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_device.c b/drivers/net/ethernet/cavium/liquidio/octeon_device.c
index e4aa3395a578..2c615ab09e64 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.c
@@ -1180,6 +1180,10 @@ octeon_register_dispatch_fn(struct octeon_device *oct,
spin_unlock_bh(&oct->dispatch.lock);
} else {
+ if (pfn == fn &&
+ octeon_get_dispatch_arg(oct, opcode, subcode) == fn_arg)
+ return 0;
+
dev_err(&oct->pci_dev->dev,
"Found previously registered dispatch fn for opcode/subcode: %x/%x\n",
opcode, subcode);
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
index 9372d4ce9954..3461d65ff4eb 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
@@ -52,8 +52,8 @@ struct __dispatch {
* @return Failure: NULL
*
*/
-static inline void *octeon_get_dispatch_arg(struct octeon_device *octeon_dev,
- u16 opcode, u16 subcode)
+void *octeon_get_dispatch_arg(struct octeon_device *octeon_dev,
+ u16 opcode, u16 subcode)
{
int idx;
struct list_head *dispatch;
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_droq.h b/drivers/net/ethernet/cavium/liquidio/octeon_droq.h
index f91bc84d1719..815a9f56fd59 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_droq.h
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_droq.h
@@ -400,6 +400,9 @@ int octeon_register_dispatch_fn(struct octeon_device *oct,
u16 subcode,
octeon_dispatch_fn_t fn, void *fn_arg);
+void *octeon_get_dispatch_arg(struct octeon_device *oct,
+ u16 opcode, u16 subcode);
+
void octeon_droq_print_stats(void);
u32 octeon_droq_check_hw_for_pkts(struct octeon_droq *droq);